Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

36 files changed, 3199 insertions, 0 deletions

diff --git a/vendor/dirs-next/.cargo-checksum.json b/vendor/dirs-next/.cargo-checksum.json
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index 000000000..e4bcb918b
--- /dev/null
+++ b/vendor/dirs-next/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"CHANGELOG.md":"154d14e845441ab50e77e39d27271b491ccdcf24abcefa5fba8849baf49d9752","Cargo.toml":"19b2a694823b5a551d9230dbc8dadcca52ba9ccd3f524e7302037c62be7781ea","LICENSE-APACHE":"d3174ad63e721d4c9dccb8ad4320848992d314369bc46319720b5802c9153fe9","LICENSE-MIT":"6a2e0ade09a7d5f816f11566fee2b151b32235a7fad52b41d49cce96f833c1a9","README.md":"8f3ae543f17fdc0aba26d76942abbfe9a165a36368d8897110734bde40d58bfd","src/lib.rs":"891ce8e700232d17bfb791d5435d9253abf26338b62a36ea1d84a8446c50e415","src/lin.rs":"e8d15b8e0ca88442572e6847df6e83aaa55eb516664cc8871f4ced20cc28cecc","src/mac.rs":"73bee8645d31c29cb882130be0e05d535cb62c0a90932176336553b7b47ba541","src/wasm.rs":"5cc16195a6f6c475cf849af2aff765085f1f70a9ba548d38d2cbf3fed4334007","src/win.rs":"c980eb7de59cbf683c50130290c312bcf83e8ea94e6231a83b2c189b889f9afc"},"package":"b98cf8ebf19c3d1b223e151f99a4f9f0690dca41414773390fc824184ac833e1"}
\ No newline at end of file
diff --git a/vendor/dirs-next/CHANGELOG.md b/vendor/dirs-next/CHANGELOG.md
new file mode 100644
index 000000000..474a2d1a0
--- /dev/null
+++ b/vendor/dirs-next/CHANGELOG.md
@@ -0,0 +1,60 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+<!--
+# Guiding Principles
+
+* Changelogs are for _humans_, not machines.
+* There should be an entry for every single version.
+* The same types of changes should be grouped.
+* Versions and sections should be linkable.
+* The latest version comes first.
+* The release date of each version is displayed.
+* Mention whether you follow Semantic Versioning.
+
+# Types of changes
+
+* `Added` for new features.
+* `Changed` for changes in existing functionality.
+* `Deprecated` for soon-to-be removed features.
+* `Removed` for now removed features.
+* `Fixed` for any bug fixes.
+* `Security` in case of vulnerabilities.
+ -->
+
+<!-- next-header -->
+## [Unreleased] - ReleaseDate
+
+## [2.0.0] - 2020-10-22
+### Breaking changed
+* Behavior of `config_dir` on macOS is changed.
+  According to [Apple guideline][appple-configdir], configuration files should be placed
+  in subdirectory of `Library/Application Support`. The old behavior of `config_dir`
+  returns `Library/Preferences`, which is incorrect. As users should use `CFPreferences`
+  API to get and set preference values for their app instead.
+
+[appple-configdir]: https://developer.apple.com/library/archive/documentation/FileManagement/Conceptual/FileSystemProgrammingGuide/FileSystemOverview/FileSystemOverview.html#//apple_ref/doc/uid/TP40010672-CH2-SW1
+
+## [1.0.2] - 2020-10-13
+### Changed
+* Bump cfg-if version to v1
+
+## [1.0.1]
+### Fixed
+* Relax pinning `cfg-if` at `0.1.9`. Previously we inherited that from upstream repository when forking.
+  The original author wanted to keep minimum Rust version at 1.13 which we don't anymore.
+
+## [1.0.0] - 2020-05-17
+
+This is the re-publish of `dirs` crate as is.
+
+<!-- next-url -->
+[Unreleased]: https://github.com/xdg-rs/dirs/compare/dirs-v2.0.0...HEAD
+[2.0.0]: https://github.com/xdg-rs/dirs/compare/dirs-v1.0.2...dirs-v2.0.0
+[1.0.2]: https://github.com/xdg-rs/dirs/compare/dirs-v1.0.1...dirs-v1.0.2
+[1.0.1]: https://github.com/xdg-rs/dirs/compare/dirs-v1.0.0...dirs-v1.0.1
+[1.0.0]: https://github.com/xdg-rs/dirs/releases/tag/dirs-v1.0.0
diff --git a/vendor/dirs-next/Cargo.toml b/vendor/dirs-next/Cargo.toml
new file mode 100644
index 000000000..0a4b0392f
--- /dev/null
+++ b/vendor/dirs-next/Cargo.toml
@@ -0,0 +1,30 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies
+#
+# If you believe there's an error in this file please file an
+# issue against the rust-lang/cargo repository. If you're
+# editing this file be aware that the upstream Cargo.toml
+# will likely look very different (and much more reasonable)
+
+[package]
+edition = "2018"
+name = "dirs-next"
+version = "2.0.0"
+authors = ["The @xdg-rs members"]
+include = ["CHANGELOG.md", "Cargo.toml", "LICENSE-APACHE", "LICENSE-MIT", "README.md", "/src/"]
+description = "A tiny low-level library that provides platform-specific standard locations\nof directories for config, cache and other data on Linux, Windows, macOS\nand Redox by leveraging the mechanisms defined by the XDG base/user\ndirectory specifications on Linux, the Known Folder API on Windows,\nand the Standard Directory guidelines on macOS.\n"
+readme = "README.md"
+keywords = ["xdg", "basedir", "app_dirs", "path", "folder"]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/xdg-rs/dirs"
+[dependencies.cfg-if]
+version = "1.0.0"
+
+[dependencies.dirs-sys-next]
+version = "0.1"
+[badges.maintenance]
+status = "passively-maintained"
diff --git a/vendor/dirs-next/LICENSE-APACHE b/vendor/dirs-next/LICENSE-APACHE
new file mode 100644
index 000000000..91e18a62b
--- /dev/null
+++ b/vendor/dirs-next/LICENSE-APACHE
@@ -0,0 +1,174 @@
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diff --git a/vendor/dirs-next/LICENSE-MIT b/vendor/dirs-next/LICENSE-MIT
new file mode 100644
index 000000000..1452dc143
--- /dev/null
+++ b/vendor/dirs-next/LICENSE-MIT
@@ -0,0 +1,19 @@
+Copyright (c) 2018-2019 dirs-rs contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
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+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/vendor/dirs-next/README.md b/vendor/dirs-next/README.md
new file mode 100644
index 000000000..6de177246
--- /dev/null
+++ b/vendor/dirs-next/README.md
@@ -0,0 +1,167 @@
+[![crates.io](https://img.shields.io/crates/v/dirs-next.svg)](https://crates.io/crates/dirs-next)
+[![API documentation](https://docs.rs/dirs-next/badge.svg)](https://docs.rs/dirs-next/)
+
+# `dirs-next`
+
+**Note**: This is a fork of once-abandoned `dirs` crate.
+
+There is a mid-level sister library, [directories-next].
+
+## Introduction
+
+- a tiny low-level library with a minimal API
+- that provides the platform-specific, user-accessible locations
+- for retrieving and storing configuration, cache and other data
+- on Linux, Redox, Windows (≥ Vista), macOS and other platforms.
+
+The library provides the location of these directories by leveraging the mechanisms defined by
+- the [XDG base directory](https://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html) and
+  the [XDG user directory](https://www.freedesktop.org/wiki/Software/xdg-user-dirs/) specifications on Linux and Redox
+- the [Known Folder](https://msdn.microsoft.com/en-us/library/windows/desktop/dd378457.aspx) API on Windows
+- the [Standard Directories](https://developer.apple.com/library/content/documentation/FileManagement/Conceptual/FileSystemProgrammingGuide/FileSystemOverview/FileSystemOverview.html#//apple_ref/doc/uid/TP40010672-CH2-SW6)
+  guidelines on macOS
+
+## Platforms
+
+This library is written in Rust, and supports Linux, Redox, macOS and Windows.
+Other platforms are also supported; they use the Linux conventions.
+
+## Minimum Rust version policy
+
+The minimal required version of Rust is `1.34.0`.
+
+We may bump the Rust version in major and minor releases (`x`/`y` in `x.y.z`).
+Changing the Rust version will be written in the CHANGELOG.
+
+## Example
+
+Library run by user Alice:
+
+```rust
+dirs_next::home_dir();
+// Lin: Some(/home/alice)
+// Win: Some(C:\Users\Alice)
+// Mac: Some(/Users/Alice)
+
+dirs_next::audio_dir();
+// Lin: Some(/home/alice/Music)
+// Win: Some(C:\Users\Alice\Music)
+// Mac: Some(/Users/Alice/Music)
+
+dirs_next::config_dir();
+// Lin: Some(/home/alice/.config)
+// Win: Some(C:\Users\Alice\AppData\Roaming)
+// Mac: Some(/Users/Alice/Library/Application Support)
+
+dirs_next::executable_dir();
+// Lin: Some(/home/alice/.local/bin)
+// Win: None
+// Mac: None
+```
+
+## Design Goals
+
+- The _dirs-next_ library is a low-level crate designed to provide the paths to standard directories
+  as defined by operating systems rules or conventions. If your requirements are more complex,
+  e. g. computing cache, config, etc. paths for specific applications or projects, consider using
+  [directories-next] instead.
+- This library does not create directories or check for their existence. The library only provides
+  information on what the path to a certain directory _should_ be. How this information is used is
+  a decision that developers need to make based on the requirements of each individual application.
+- This library is intentionally focused on providing information on user-writable directories only.
+  There is no discernible benefit in returning a path that points to a user-level, writable
+  directory on one operating system, but a system-level, read-only directory on another, that would
+  outweigh the confusion and unexpected failures such an approach would cause.
+  - `executable_dir` is specified to provide the path to a user-writable directory for binaries.<br/>
+    As such a directory only commonly exists on Linux, it returns `None` on macOS and Windows.
+  - `font_dir` is specified to provide the path to a user-writable directory for fonts.<br/>
+    As such a directory only exists on Linux and macOS, it returns `None` on Windows.
+  - `runtime_dir` is specified to provide the path to a directory for non-essential runtime data.
+    It is required that this directory is created when the user logs in, is only accessible by the
+    user itself, is deleted when the user logs out, and supports all filesystem features of the
+    operating system.<br/>
+    As such a directory only commonly exists on Linux, it returns `None` on macOS and Windows.
+
+## Features
+
+**If you want to compute the location of cache, config or data directories for your own application or project,
+use `ProjectDirs` of the [directories-next] project instead.**
+
+| Function name    | Value on Linux/Redox                                                                             | Value on Windows                  | Value on macOS                              |
+| ---------------- | ------------------------------------------------------------------------------------------------ | --------------------------------- | ------------------------------------------- |
+| `home_dir`       | `Some($HOME)`                                                                                    | `Some({FOLDERID_Profile})`        | `Some($HOME)`                               |
+| `cache_dir`      | `Some($XDG_CACHE_HOME)`         or `Some($HOME`/.cache`)`                                        | `Some({FOLDERID_LocalAppData})`   | `Some($HOME`/Library/Caches`)`              |
+| `config_dir`     | `Some($XDG_CONFIG_HOME)`        or `Some($HOME`/.config`)`                                       | `Some({FOLDERID_RoamingAppData})` | `Some($HOME`/Library/Application Support`)` |
+| `data_dir`       | `Some($XDG_DATA_HOME)`          or `Some($HOME`/.local/share`)`                                  | `Some({FOLDERID_RoamingAppData})` | `Some($HOME`/Library/Application Support`)` |
+| `data_local_dir` | `Some($XDG_DATA_HOME)`          or `Some($HOME`/.local/share`)`                                  | `Some({FOLDERID_LocalAppData})`   | `Some($HOME`/Library/Application Support`)` |
+| `executable_dir` | `Some($XDG_BIN_HOME`/../bin`)`  or `Some($XDG_DATA_HOME`/../bin`)` or `Some($HOME`/.local/bin`)` | `None`                            | `None`                                      |
+| `runtime_dir`    | `Some($XDG_RUNTIME_DIR)`        or `None`                                                        | `None`                            | `None`                                      |
+| `audio_dir`      | `Some(XDG_MUSIC_DIR)`           or `None`                                                        | `Some({FOLDERID_Music})`          | `Some($HOME`/Music/`)`                      |
+| `desktop_dir`    | `Some(XDG_DESKTOP_DIR)`         or `None`                                                        | `Some({FOLDERID_Desktop})`        | `Some($HOME`/Desktop/`)`                    |
+| `document_dir`   | `Some(XDG_DOCUMENTS_DIR)`       or `None`                                                        | `Some({FOLDERID_Documents})`      | `Some($HOME`/Documents/`)`                  |
+| `download_dir`   | `Some(XDG_DOWNLOAD_DIR)`        or `None`                                                        | `Some({FOLDERID_Downloads})`      | `Some($HOME`/Downloads/`)`                  |
+| `font_dir`       | `Some($XDG_DATA_HOME`/fonts/`)` or `Some($HOME`/.local/share/fonts/`)`                           | `None`                            | `Some($HOME`/Library/Fonts/`)`              |
+| `picture_dir`    | `Some(XDG_PICTURES_DIR)`        or `None`                                                        | `Some({FOLDERID_Pictures})`       | `Some($HOME`/Pictures/`)`                   |
+| `public_dir`     | `Some(XDG_PUBLICSHARE_DIR)`     or `None`                                                        | `Some({FOLDERID_Public})`         | `Some($HOME`/Public/`)`                     |
+| `template_dir`   | `Some(XDG_TEMPLATES_DIR)`       or `None`                                                        | `Some({FOLDERID_Templates})`      | `None`                                      |
+| `video_dir`      | `Some(XDG_VIDEOS_DIR)`          or `None`                                                        | `Some({FOLDERID_Videos})`         | `Some($HOME`/Movies/`)`                     |
+
+## Comparison
+
+There are other crates in the Rust ecosystem that try similar or related things.
+Here is an overview of them, combined with ratings on properties that guided the design of this crate.
+
+Please take this table with a grain of salt: a different crate might very well be more suitable for your specific use case.
+
+| Library               | Status         | Lin | Mac | Win |Base|User|Proj|Conv|
+| --------------------- | -------------- |:---:|:---:|:---:|:--:|:--:|:--:|:--:|
+| `app_dirs`            | Unmaintained   |  ✔  |  ✔  |  ✔  | 🞈  | ✖  | ✔  | ✖  |
+| `app_dirs2`           | Maintained     |  ✔  |  ✔  |  ✔  | 🞈  | ✖  | ✔  | ✖  |
+| **dirs-next**         | **Developed**  |  ✔  |  ✔  |  ✔  | ✔  | ✔  | ✖  | ✔  |
+| `directories-next`    | Developed      |  ✔  |  ✔  |  ✔  | ✔  | ✔  | ✔  | ✔  |
+| `s_app_dir`           | Unmaintained?  |  ✔  |  ✖  |  🞈  | ✖  | ✖  | 🞈  | ✖  |
+| `standard_paths`      | Maintained     |  ✔  |  ✖  |  ✔  | ✔  | ✔  | ✔  | ✖  |
+| `xdg`                 | Maintained     |  ✔  |  ✖  |  ✖  | ✔  | ✖  | ✔  | 🞈  |
+| `xdg-basedir`         | Unmaintained?  |  ✔  |  ✖  |  ✖  | ✔  | ✖  | ✖  | 🞈  |
+| `xdg-rs`              | Obsolete       |  ✔  |  ✖  |  ✖  | ✔  | ✖  | ✖  | 🞈  |
+
+- Lin: Linux support
+- Mac: macOS support
+- Win: Windows support
+- Base: Supports [generic base directories](https://github.com/xdg-rs/dirs/tree/master/directories#basedirs)
+- User: Supports [user directories](https://github.com/xdg-rs/dirs/tree/master/directories#userdirs)
+- Proj: Supports [project-specific base directories](https://github.com/xdg-rs/dirs/tree/master/directories#projectdirs)
+- Conv: Follows naming conventions of the operating system it runs on
+
+## Build
+
+It's possible to cross-compile this library if the necessary toolchains are installed with rustup.
+This is helpful to ensure a change hasn't broken code on a different platform.
+
+The following commands will build this library on Linux, macOS and Windows:
+
+```console
+cargo build --target=x86_64-unknown-linux-gnu
+cargo build --target=x86_64-pc-windows-gnu
+cargo build --target=x86_64-apple-darwin
+cargo build --target=x86_64-unknown-redox
+```
+
+## License
+
+Licensed under either of
+
+ * Apache License, Version 2.0
+   ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+ * MIT license
+   ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+
+at your option.
+
+## Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in the work by you, as defined in the Apache-2.0 license, shall be
+dual licensed as above, without any additional terms or conditions.
+
+[directories-next]: https://github.com/xdg-rs/dirs/tree/master/directories
diff --git a/vendor/dirs-next/src/lib.rs b/vendor/dirs-next/src/lib.rs
new file mode 100644
index 000000000..518ac60af
--- /dev/null
+++ b/vendor/dirs-next/src/lib.rs
@@ -0,0 +1,272 @@
+//! The _dirs-next_ crate is
+//!
+//! - a tiny library with a minimal API (16 functions)
+//! - that provides the platform-specific, user-accessible locations
+//! - for finding and storing configuration, cache and other data
+//! - on Linux, Redox, Windows (≥ Vista) and macOS.
+//!
+//! The library provides the location of these directories by leveraging the mechanisms defined by
+//!
+//! - the [XDG base directory](https://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html) and the [XDG user directory](https://www.freedesktop.org/wiki/Software/xdg-user-dirs/) specifications on Linux,
+//! - the [Known Folder](https://msdn.microsoft.com/en-us/library/windows/desktop/bb776911(v=vs.85).aspx) system on Windows, and
+//! - the [Standard Directories](https://developer.apple.com/library/content/documentation/FileManagement/Conceptual/FileSystemProgrammingGuide/FileSystemOverview/FileSystemOverview.html#//apple_ref/doc/uid/TP40010672-CH2-SW6) on macOS.
+
+#![deny(missing_docs)]
+#![warn(rust_2018_idioms)]
+
+use cfg_if::cfg_if;
+
+use std::path::PathBuf;
+
+cfg_if! {
+    if #[cfg(target_os = "windows")] {
+        mod win;
+        use win as sys;
+    } else if #[cfg(any(target_os = "macos", target_os = "ios"))] {
+        mod mac;
+        use mac as sys;
+    } else if #[cfg(target_arch = "wasm32")] {
+        mod wasm;
+        use wasm as sys;
+    } else {
+        mod lin;
+        use crate::lin as sys;
+    }
+}
+
+/// Returns the path to the user's home directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                | Example        |
+/// | ------- | -------------------- | -------------- |
+/// | Linux   | `$HOME`              | /home/alice    |
+/// | macOS   | `$HOME`              | /Users/Alice   |
+/// | Windows | `{FOLDERID_Profile}` | C:\Users\Alice |
+///
+/// ### Linux and macOS:
+///
+/// - Use `$HOME` if it is set and not empty.
+/// - If `$HOME` is not set or empty, then the function `getpwuid_r` is used to determine
+///   the home directory of the current user.
+/// - If `getpwuid_r` lacks an entry for the current user id or the home directory field is empty,
+///   then the function returns `None`.
+///
+/// ### Windows:
+///
+/// This function retrieves the user profile folder using `SHGetKnownFolderPath`.
+///
+/// All the examples on this page mentioning `$HOME` use this behavior.
+///
+/// _Note:_ This function's behavior differs from [`std::env::home_dir`],
+/// which works incorrectly on Linux, macOS and Windows.
+///
+/// [`std::env::home_dir`]: https://doc.rust-lang.org/std/env/fn.home_dir.html
+pub fn home_dir() -> Option<PathBuf> {
+    sys::home_dir()
+}
+/// Returns the path to the user's cache directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                               | Example                      |
+/// | ------- | ----------------------------------- | ---------------------------- |
+/// | Linux   | `$XDG_CACHE_HOME` or `$HOME`/.cache | /home/alice/.cache           |
+/// | macOS   | `$HOME`/Library/Caches              | /Users/Alice/Library/Caches  |
+/// | Windows | `{FOLDERID_LocalAppData}`           | C:\Users\Alice\AppData\Local |
+pub fn cache_dir() -> Option<PathBuf> {
+    sys::cache_dir()
+}
+/// Returns the path to the user's config directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                                 | Example                          |
+/// | ------- | ------------------------------------- | -------------------------------- |
+/// | Linux   | `$XDG_CONFIG_HOME` or `$HOME`/.config | /home/alice/.config              |
+/// | macOS   | `$HOME`/Library/Application Support   | /Users/Alice/Library/Application Support |
+/// | Windows | `{FOLDERID_RoamingAppData}`           | C:\Users\Alice\AppData\Roaming   |
+pub fn config_dir() -> Option<PathBuf> {
+    sys::config_dir()
+}
+/// Returns the path to the user's data directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                                    | Example                                  |
+/// | ------- | ---------------------------------------- | ---------------------------------------- |
+/// | Linux   | `$XDG_DATA_HOME` or `$HOME`/.local/share | /home/alice/.local/share                 |
+/// | macOS   | `$HOME`/Library/Application Support      | /Users/Alice/Library/Application Support |
+/// | Windows | `{FOLDERID_RoamingAppData}`              | C:\Users\Alice\AppData\Roaming           |
+pub fn data_dir() -> Option<PathBuf> {
+    sys::data_dir()
+}
+/// Returns the path to the user's local data directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                                    | Example                                  |
+/// | ------- | ---------------------------------------- | ---------------------------------------- |
+/// | Linux   | `$XDG_DATA_HOME` or `$HOME`/.local/share | /home/alice/.local/share                 |
+/// | macOS   | `$HOME`/Library/Application Support      | /Users/Alice/Library/Application Support |
+/// | Windows | `{FOLDERID_LocalAppData}`                | C:\Users\Alice\AppData\Local             |
+pub fn data_local_dir() -> Option<PathBuf> {
+    sys::data_local_dir()
+}
+/// Returns the path to the user's executable directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                                                            | Example                |
+/// | ------- | ---------------------------------------------------------------- | ---------------------- |
+/// | Linux   | `$XDG_BIN_HOME` or `$XDG_DATA_HOME`/../bin or `$HOME`/.local/bin | /home/alice/.local/bin |
+/// | macOS   | –                                                                | –                      |
+/// | Windows | –                                                                | –                      |
+pub fn executable_dir() -> Option<PathBuf> {
+    sys::executable_dir()
+}
+/// Returns the path to the user's runtime directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value              | Example         |
+/// | ------- | ------------------ | --------------- |
+/// | Linux   | `$XDG_RUNTIME_DIR` | /run/user/1001/ |
+/// | macOS   | –                  | –               |
+/// | Windows | –                  | –               |
+pub fn runtime_dir() -> Option<PathBuf> {
+    sys::runtime_dir()
+}
+
+/// Returns the path to the user's audio directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value              | Example              |
+/// | ------- | ------------------ | -------------------- |
+/// | Linux   | `XDG_MUSIC_DIR`    | /home/alice/Music    |
+/// | macOS   | `$HOME`/Music      | /Users/Alice/Music   |
+/// | Windows | `{FOLDERID_Music}` | C:\Users\Alice\Music |
+pub fn audio_dir() -> Option<PathBuf> {
+    sys::audio_dir()
+}
+/// Returns the path to the user's desktop directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                | Example                |
+/// | ------- | -------------------- | ---------------------- |
+/// | Linux   | `XDG_DESKTOP_DIR`    | /home/alice/Desktop    |
+/// | macOS   | `$HOME`/Desktop      | /Users/Alice/Desktop   |
+/// | Windows | `{FOLDERID_Desktop}` | C:\Users\Alice\Desktop |
+pub fn desktop_dir() -> Option<PathBuf> {
+    sys::desktop_dir()
+}
+/// Returns the path to the user's document directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                  | Example                  |
+/// | ------- | ---------------------- | ------------------------ |
+/// | Linux   | `XDG_DOCUMENTS_DIR`    | /home/alice/Documents    |
+/// | macOS   | `$HOME`/Documents      | /Users/Alice/Documents   |
+/// | Windows | `{FOLDERID_Documents}` | C:\Users\Alice\Documents |
+pub fn document_dir() -> Option<PathBuf> {
+    sys::document_dir()
+}
+/// Returns the path to the user's download directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                  | Example                  |
+/// | ------- | ---------------------- | ------------------------ |
+/// | Linux   | `XDG_DOWNLOAD_DIR`     | /home/alice/Downloads    |
+/// | macOS   | `$HOME`/Downloads      | /Users/Alice/Downloads   |
+/// | Windows | `{FOLDERID_Downloads}` | C:\Users\Alice\Downloads |
+pub fn download_dir() -> Option<PathBuf> {
+    sys::download_dir()
+}
+/// Returns the path to the user's font directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                                                | Example                        |
+/// | ------- | ---------------------------------------------------- | ------------------------------ |
+/// | Linux   | `$XDG_DATA_HOME`/fonts or `$HOME`/.local/share/fonts | /home/alice/.local/share/fonts |
+/// | macOS   | `$HOME/Library/Fonts`                                | /Users/Alice/Library/Fonts     |
+/// | Windows | –                                                    | –                              |
+pub fn font_dir() -> Option<PathBuf> {
+    sys::font_dir()
+}
+/// Returns the path to the user's picture directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                 | Example                 |
+/// | ------- | --------------------- | ----------------------- |
+/// | Linux   | `XDG_PICTURES_DIR`    | /home/alice/Pictures    |
+/// | macOS   | `$HOME`/Pictures      | /Users/Alice/Pictures   |
+/// | Windows | `{FOLDERID_Pictures}` | C:\Users\Alice\Pictures |
+pub fn picture_dir() -> Option<PathBuf> {
+    sys::picture_dir()
+}
+/// Returns the path to the user's public directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                 | Example             |
+/// | ------- | --------------------- | ------------------- |
+/// | Linux   | `XDG_PUBLICSHARE_DIR` | /home/alice/Public  |
+/// | macOS   | `$HOME`/Public        | /Users/Alice/Public |
+/// | Windows | `{FOLDERID_Public}`   | C:\Users\Public     |
+pub fn public_dir() -> Option<PathBuf> {
+    sys::public_dir()
+}
+/// Returns the path to the user's template directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                  | Example                                                    |
+/// | ------- | ---------------------- | ---------------------------------------------------------- |
+/// | Linux   | `XDG_TEMPLATES_DIR`    | /home/alice/Templates                                      |
+/// | macOS   | –                      | –                                                          |
+/// | Windows | `{FOLDERID_Templates}` | C:\Users\Alice\AppData\Roaming\Microsoft\Windows\Templates |
+pub fn template_dir() -> Option<PathBuf> {
+    sys::template_dir()
+}
+
+/// Returns the path to the user's video directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value               | Example               |
+/// | ------- | ------------------- | --------------------- |
+/// | Linux   | `XDG_VIDEOS_DIR`    | /home/alice/Videos    |
+/// | macOS   | `$HOME`/Movies      | /Users/Alice/Movies   |
+/// | Windows | `{FOLDERID_Videos}` | C:\Users\Alice\Videos |
+pub fn video_dir() -> Option<PathBuf> {
+    sys::video_dir()
+}
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn test_dirs() {
+        println!("home_dir:       {:?}", crate::home_dir());
+        println!("cache_dir:      {:?}", crate::cache_dir());
+        println!("config_dir:     {:?}", crate::config_dir());
+        println!("data_dir:       {:?}", crate::data_dir());
+        println!("data_local_dir: {:?}", crate::data_local_dir());
+        println!("executable_dir: {:?}", crate::executable_dir());
+        println!("runtime_dir:    {:?}", crate::runtime_dir());
+        println!("audio_dir:      {:?}", crate::audio_dir());
+        println!("home_dir:       {:?}", crate::desktop_dir());
+        println!("cache_dir:      {:?}", crate::document_dir());
+        println!("config_dir:     {:?}", crate::download_dir());
+        println!("font_dir:       {:?}", crate::font_dir());
+        println!("picture_dir:    {:?}", crate::picture_dir());
+        println!("public_dir:     {:?}", crate::public_dir());
+        println!("template_dir:   {:?}", crate::template_dir());
+        println!("video_dir:      {:?}", crate::video_dir());
+    }
+}
diff --git a/vendor/dirs-next/src/lin.rs b/vendor/dirs-next/src/lin.rs
new file mode 100644
index 000000000..a3ca404a8
--- /dev/null
+++ b/vendor/dirs-next/src/lin.rs
@@ -0,0 +1,32 @@
+use std::env;
+use std::path::PathBuf;
+
+pub fn home_dir()       -> Option<PathBuf> { dirs_sys_next::home_dir() }
+pub fn cache_dir()      -> Option<PathBuf> { env::var_os("XDG_CACHE_HOME") .and_then(dirs_sys_next::is_absolute_path).or_else(|| home_dir().map(|h| h.join(".cache"))) }
+pub fn config_dir()     -> Option<PathBuf> { env::var_os("XDG_CONFIG_HOME").and_then(dirs_sys_next::is_absolute_path).or_else(|| home_dir().map(|h| h.join(".config"))) }
+pub fn data_dir()       -> Option<PathBuf> { env::var_os("XDG_DATA_HOME")  .and_then(dirs_sys_next::is_absolute_path).or_else(|| home_dir().map(|h| h.join(".local/share"))) }
+pub fn data_local_dir() -> Option<PathBuf> { data_dir() }
+pub fn runtime_dir()    -> Option<PathBuf> { env::var_os("XDG_RUNTIME_DIR").and_then(dirs_sys_next::is_absolute_path) }
+pub fn executable_dir() -> Option<PathBuf> {
+    env::var_os("XDG_BIN_HOME").and_then(dirs_sys_next::is_absolute_path).or_else(|| {
+        data_dir().map(|mut e| { e.pop(); e.push("bin"); e })
+    })
+}
+pub fn audio_dir()      -> Option<PathBuf> { dirs_sys_next::user_dir("MUSIC") }
+pub fn desktop_dir()    -> Option<PathBuf> { dirs_sys_next::user_dir("DESKTOP") }
+pub fn document_dir()   -> Option<PathBuf> { dirs_sys_next::user_dir("DOCUMENTS") }
+pub fn download_dir()   -> Option<PathBuf> { dirs_sys_next::user_dir("DOWNLOAD") }
+pub fn font_dir()       -> Option<PathBuf> { data_dir().map(|d| d.join("fonts")) }
+pub fn picture_dir()    -> Option<PathBuf> { dirs_sys_next::user_dir("PICTURES") }
+pub fn public_dir()     -> Option<PathBuf> { dirs_sys_next::user_dir("PUBLICSHARE") }
+pub fn template_dir()   -> Option<PathBuf> { dirs_sys_next::user_dir("TEMPLATES") }
+pub fn video_dir()      -> Option<PathBuf> { dirs_sys_next::user_dir("VIDEOS") }
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn test_file_user_dirs_exists() {
+        let user_dirs_file = crate::config_dir().unwrap().join("user-dirs.dirs");
+        println!("{:?} exists: {:?}", user_dirs_file, user_dirs_file.exists());
+    }
+}
diff --git a/vendor/dirs-next/src/mac.rs b/vendor/dirs-next/src/mac.rs
new file mode 100644
index 000000000..914d96ecb
--- /dev/null
+++ b/vendor/dirs-next/src/mac.rs
@@ -0,0 +1,18 @@
+use std::path::PathBuf;
+
+pub fn home_dir()       -> Option<PathBuf> { dirs_sys_next::home_dir() }
+pub fn cache_dir()      -> Option<PathBuf> { home_dir().map(|h| h.join("Library/Caches")) }
+pub fn config_dir()     -> Option<PathBuf> { data_dir() }
+pub fn data_dir()       -> Option<PathBuf> { home_dir().map(|h| h.join("Library/Application Support")) }
+pub fn data_local_dir() -> Option<PathBuf> { data_dir() }
+pub fn executable_dir() -> Option<PathBuf> { None }
+pub fn runtime_dir()    -> Option<PathBuf> { None }
+pub fn audio_dir()      -> Option<PathBuf> { home_dir().map(|h| h.join("Music")) }
+pub fn desktop_dir()    -> Option<PathBuf> { home_dir().map(|h| h.join("Desktop")) }
+pub fn document_dir()   -> Option<PathBuf> { home_dir().map(|h| h.join("Documents")) }
+pub fn download_dir()   -> Option<PathBuf> { home_dir().map(|h| h.join("Downloads")) }
+pub fn font_dir()       -> Option<PathBuf> { home_dir().map(|h| h.join("Library/Fonts")) }
+pub fn picture_dir()    -> Option<PathBuf> { home_dir().map(|h| h.join("Pictures")) }
+pub fn public_dir()     -> Option<PathBuf> { home_dir().map(|h| h.join("Public")) }
+pub fn template_dir()   -> Option<PathBuf> { None }
+pub fn video_dir()      -> Option<PathBuf> { home_dir().map(|h| h.join("Movies")) }
diff --git a/vendor/dirs-next/src/wasm.rs b/vendor/dirs-next/src/wasm.rs
new file mode 100644
index 000000000..2ead7201b
--- /dev/null
+++ b/vendor/dirs-next/src/wasm.rs
@@ -0,0 +1,20 @@
+// Stub definitions to make things *compile*.
+
+use std::path::PathBuf;
+
+pub fn home_dir()       -> Option<PathBuf> { None }
+pub fn cache_dir()      -> Option<PathBuf> { None }
+pub fn config_dir()     -> Option<PathBuf> { None }
+pub fn data_dir()       -> Option<PathBuf> { None }
+pub fn data_local_dir() -> Option<PathBuf> { None }
+pub fn runtime_dir()    -> Option<PathBuf> { None }
+pub fn executable_dir() -> Option<PathBuf> { None }
+pub fn audio_dir()      -> Option<PathBuf> { None }
+pub fn desktop_dir()    -> Option<PathBuf> { None }
+pub fn document_dir()   -> Option<PathBuf> { None }
+pub fn download_dir()   -> Option<PathBuf> { None }
+pub fn font_dir()       -> Option<PathBuf> { None }
+pub fn picture_dir()    -> Option<PathBuf> { None }
+pub fn public_dir()     -> Option<PathBuf> { None }
+pub fn template_dir()   -> Option<PathBuf> { None }
+pub fn video_dir()      -> Option<PathBuf> { None }
diff --git a/vendor/dirs-next/src/win.rs b/vendor/dirs-next/src/win.rs
new file mode 100644
index 000000000..b2f8b6c2f
--- /dev/null
+++ b/vendor/dirs-next/src/win.rs
@@ -0,0 +1,18 @@
+use std::path::PathBuf;
+
+pub fn home_dir()       -> Option<PathBuf> { dirs_sys_next::known_folder_profile() }
+pub fn data_dir()       -> Option<PathBuf> { dirs_sys_next::known_folder_roaming_app_data() }
+pub fn data_local_dir() -> Option<PathBuf> { dirs_sys_next::known_folder_local_app_data() }
+pub fn cache_dir()      -> Option<PathBuf> { data_local_dir() }
+pub fn config_dir()     -> Option<PathBuf> { data_dir() }
+pub fn executable_dir() -> Option<PathBuf> { None }
+pub fn runtime_dir()    -> Option<PathBuf> { None }
+pub fn audio_dir()      -> Option<PathBuf> { dirs_sys_next::known_folder_music() }
+pub fn desktop_dir()    -> Option<PathBuf> { dirs_sys_next::known_folder_desktop() }
+pub fn document_dir()   -> Option<PathBuf> { dirs_sys_next::known_folder_documents() }
+pub fn download_dir()   -> Option<PathBuf> { dirs_sys_next::known_folder_downloads() }
+pub fn font_dir()       -> Option<PathBuf> { None }
+pub fn picture_dir()    -> Option<PathBuf> { dirs_sys_next::known_folder_pictures() }
+pub fn public_dir()     -> Option<PathBuf> { dirs_sys_next::known_folder_public()}
+pub fn template_dir()   -> Option<PathBuf> { dirs_sys_next::known_folder_templates() }
+pub fn video_dir()      -> Option<PathBuf> { dirs_sys_next::known_folder_videos() }
diff --git a/vendor/dirs-sys-next/.cargo-checksum.json b/vendor/dirs-sys-next/.cargo-checksum.json
new file mode 100644
index 000000000..511774523
--- /dev/null
+++ b/vendor/dirs-sys-next/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"CHANGELOG.md":"6604e30611fe9cc5f307f622fd4d763c3e0284ee98355830a9d8adfe48b45734","Cargo.toml":"c175070c42d97fe11d1d684b4e47f6a3bcdfef2a1fa6afda44ef42279dbe93ab","LICENSE-APACHE":"d3174ad63e721d4c9dccb8ad4320848992d314369bc46319720b5802c9153fe9","LICENSE-MIT":"6a2e0ade09a7d5f816f11566fee2b151b32235a7fad52b41d49cce96f833c1a9","README.md":"ee16237514c143cd4e1496fb268a5bb1807d102511a54b27ec4c94f477ed9f28","src/lib.rs":"344d57bd4f20ac70ab7ef2cbeb4dc33ce443b8f4fdbddb92e846e4bf25027b62","src/xdg_user_dirs.rs":"a160d7f56fd346febcaa47cea27dc460dc89a0d4c12025673a8a322854bce207"},"package":"4ebda144c4fe02d1f7ea1a7d9641b6fc6b580adcfa024ae48797ecdeb6825b4d"}
\ No newline at end of file
diff --git a/vendor/dirs-sys-next/CHANGELOG.md b/vendor/dirs-sys-next/CHANGELOG.md
new file mode 100644
index 000000000..be802b3fd
--- /dev/null
+++ b/vendor/dirs-sys-next/CHANGELOG.md
@@ -0,0 +1,44 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+<!--
+# Guiding Principles
+
+* Changelogs are for _humans_, not machines.
+* There should be an entry for every single version.
+* The same types of changes should be grouped.
+* Versions and sections should be linkable.
+* The latest version comes first.
+* The release date of each version is displayed.
+* Mention whether you follow Semantic Versioning.
+
+# Types of changes
+
+* `Added` for new features.
+* `Changed` for changes in existing functionality.
+* `Deprecated` for soon-to-be removed features.
+* `Removed` for now removed features.
+* `Fixed` for any bug fixes.
+* `Security` in case of vulnerabilities.
+ -->
+
+<!-- next-header -->
+## [Unreleased] - ReleaseDate
+
+## [0.1.2] - 2021-01-09
+### Changed
+* Bump `redox_users` by @benesch.
+
+## [0.1.1] - 2020-10-13
+### Changed
+* Use `default-features=false` for `redox_users` crate. This should cut out quite a few
+  unneeded dependencies.
+
+<!-- next-url -->
+[Unreleased]: https://github.com/xdg-rs/dirs/compare/dirs-sys-v0.1.2...HEAD
+[0.1.2]: https://github.com/xdg-rs/dirs/compare/dirs-sys-v0.1.1...dirs-sys-v0.1.2
+[0.1.1]: https://github.com/xdg-rs/dirs/releases/tag/dirs-sys-v0.1.1
diff --git a/vendor/dirs-sys-next/Cargo.toml b/vendor/dirs-sys-next/Cargo.toml
new file mode 100644
index 000000000..e9d8d0ca9
--- /dev/null
+++ b/vendor/dirs-sys-next/Cargo.toml
@@ -0,0 +1,32 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies
+#
+# If you believe there's an error in this file please file an
+# issue against the rust-lang/cargo repository. If you're
+# editing this file be aware that the upstream Cargo.toml
+# will likely look very different (and much more reasonable)
+
+[package]
+edition = "2018"
+name = "dirs-sys-next"
+version = "0.1.2"
+authors = ["The @xdg-rs members"]
+include = ["/CHANGELOG.md", "/Cargo.toml", "/LICENSE-*", "/README.md", "/src"]
+description = "system-level helper functions for the dirs and directories crates"
+readme = "README.md"
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/xdg-rs/dirs/tree/master/dirs-sys"
+[target."cfg(target_os = \"redox\")".dependencies.redox_users]
+version = "0.4.0"
+default-features = false
+[target."cfg(unix)".dependencies.libc]
+version = "0.2"
+[target."cfg(windows)".dependencies.winapi]
+version = "0.3"
+features = ["knownfolders", "objbase", "shlobj", "winbase", "winerror"]
+[badges.maintenance]
+status = "as-is"
diff --git a/vendor/dirs-sys-next/LICENSE-APACHE b/vendor/dirs-sys-next/LICENSE-APACHE
new file mode 100644
index 000000000..91e18a62b
--- /dev/null
+++ b/vendor/dirs-sys-next/LICENSE-APACHE
@@ -0,0 +1,174 @@
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
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+4. Redistribution. You may reproduce and distribute copies of the
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+5. Submission of Contributions. Unless You explicitly state otherwise,
+   any Contribution intentionally submitted for inclusion in the Work
+   by You to the Licensor shall be under the terms and conditions of
+   this License, without any additional terms or conditions.
+   Notwithstanding the above, nothing herein shall supersede or modify
+   the terms of any separate license agreement you may have executed
+   with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade
+   names, trademarks, service marks, or product names of the Licensor,
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+   agreed to in writing, Licensor provides the Work (and each
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+
+8. Limitation of Liability. In no event and under no legal theory,
+   whether in tort (including negligence), contract, or otherwise,
+   unless required by applicable law (such as deliberate and grossly
+   negligent acts) or agreed to in writing, shall any Contributor be
+   liable to You for damages, including any direct, indirect, special,
+   incidental, or consequential damages of any character arising as a
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+9. Accepting Warranty or Additional Liability. While redistributing
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+   of your accepting any such warranty or additional liability.
diff --git a/vendor/dirs-sys-next/LICENSE-MIT b/vendor/dirs-sys-next/LICENSE-MIT
new file mode 100644
index 000000000..1452dc143
--- /dev/null
+++ b/vendor/dirs-sys-next/LICENSE-MIT
@@ -0,0 +1,19 @@
+Copyright (c) 2018-2019 dirs-rs contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/vendor/dirs-sys-next/README.md b/vendor/dirs-sys-next/README.md
new file mode 100644
index 000000000..3c706d80f
--- /dev/null
+++ b/vendor/dirs-sys-next/README.md
@@ -0,0 +1,65 @@
+[![crates.io](https://img.shields.io/crates/v/dirs-sys-next.svg)](https://crates.io/crates/dirs-sys-next)
+[![API documentation](https://docs.rs/dirs-sys-next/badge.svg)](https://docs.rs/dirs-sys-next/)
+
+# `dirs-sys-next`
+
+**NOTE**: This crate is a fork of once-abandoned `dirs-sys` crate.
+
+_Do not use this library directly, use [`dirs-next`] or [`directories-next`]._
+
+## Compatibility
+
+This crate only exists to facilitate code sharing between [`dirs-next`]
+and [`directories-next`].
+
+There are no compatibility guarantees whatsoever.
+Functions may change or disappear without warning or any kind of deprecation period.
+
+## Platforms
+
+This library is written in Rust, and supports Linux, Redox, macOS and Windows.
+Other platforms are also supported; they use the Linux conventions.
+
+## Minimum Rust version policy
+
+The minimal required version of Rust is `1.34.0`^.
+
+We may bump the Rust version in major and minor releases (`x`/`y` in `x.y.z`).
+Changing the Rust version will be written in the CHANGELOG.
+
+^ Except for Redox, where the Rust version depends on the
+[`redox_users`](https://crates.io/crates/redox_users) crate.
+
+## Build
+
+It's possible to cross-compile this library if the necessary toolchains are installed with rustup.
+This is helpful to ensure a change has not broken compilation on a different platform.
+
+The following commands will build this library on Linux, macOS and Windows:
+
+```console
+cargo build --target=x86_64-unknown-linux-gnu
+cargo build --target=x86_64-pc-windows-gnu
+cargo build --target=x86_64-apple-darwin
+cargo build --target=x86_64-unknown-redox
+```
+
+## License
+
+Licensed under either of
+
+ * Apache License, Version 2.0
+   ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+ * MIT license
+   ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+
+at your option.
+
+## Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in the work by you, as defined in the Apache-2.0 license, shall be
+dual licensed as above, without any additional terms or conditions.
+
+[`dirs-next`]: https://github.com/xdg-rs/dirs
+[`directories-next`]: https://github.com/xdg-rs/dirs/tree/master/directories
diff --git a/vendor/dirs-sys-next/src/lib.rs b/vendor/dirs-sys-next/src/lib.rs
new file mode 100644
index 000000000..f76862e85
--- /dev/null
+++ b/vendor/dirs-sys-next/src/lib.rs
@@ -0,0 +1,198 @@
+#![warn(rust_2018_idioms)]
+
+use std::ffi::OsString;
+use std::path::PathBuf;
+
+// we don't need to explicitly handle empty strings in the code above,
+// because an empty string is not considered to be a absolute path here.
+pub fn is_absolute_path(path: OsString) -> Option<PathBuf> {
+    let path = PathBuf::from(path);
+    if path.is_absolute() {
+        Some(path)
+    } else {
+        None
+    }
+}
+
+#[cfg(all(unix, not(target_os = "redox")))]
+mod target_unix_not_redox {
+
+    use std::env;
+    use std::ffi::{CStr, OsString};
+    use std::mem;
+    use std::os::unix::ffi::OsStringExt;
+    use std::path::PathBuf;
+    use std::ptr;
+
+    // https://github.com/rust-lang/rust/blob/ef3e3863939217678e5f7e755c4234d224107c64/library/std/src/sys/unix/os.rs#L587
+    pub fn home_dir() -> Option<PathBuf> {
+        return env::var_os("HOME")
+            .and_then(|h| if h.is_empty() { None } else { Some(h) })
+            .or_else(|| unsafe { fallback() })
+            .map(PathBuf::from);
+
+        #[cfg(any(target_os = "android", target_os = "ios", target_os = "emscripten"))]
+        unsafe fn fallback() -> Option<OsString> {
+            None
+        }
+        #[cfg(not(any(target_os = "android", target_os = "ios", target_os = "emscripten")))]
+        unsafe fn fallback() -> Option<OsString> {
+            let amt = match libc::sysconf(libc::_SC_GETPW_R_SIZE_MAX) {
+                n if n < 0 => 512 as usize,
+                n => n as usize,
+            };
+            let mut buf = Vec::with_capacity(amt);
+            let mut passwd: libc::passwd = mem::zeroed();
+            let mut result = ptr::null_mut();
+            match libc::getpwuid_r(libc::getuid(), &mut passwd, buf.as_mut_ptr(), buf.capacity(), &mut result) {
+                0 if !result.is_null() => {
+                    let ptr = passwd.pw_dir as *const _;
+                    let bytes = CStr::from_ptr(ptr).to_bytes();
+                    if bytes.is_empty() {
+                        None
+                    } else {
+                        Some(OsStringExt::from_vec(bytes.to_vec()))
+                    }
+                }
+                _ => None,
+            }
+        }
+    }
+}
+
+#[cfg(all(unix, not(target_os = "redox")))]
+pub use self::target_unix_not_redox::home_dir;
+
+#[cfg(target_os = "redox")]
+mod target_redox {
+
+    use std::path::PathBuf;
+
+    use redox_users::{All, AllUsers, Config};
+
+    pub fn home_dir() -> Option<PathBuf> {
+        let current_uid = redox_users::get_uid().ok()?;
+        let users = AllUsers::basic(Config::default()).ok()?;
+        let user = users.get_by_id(current_uid)?;
+
+        Some(PathBuf::from(user.home.clone()))
+    }
+}
+
+#[cfg(target_os = "redox")]
+pub use self::target_redox::home_dir;
+
+#[cfg(all(unix, not(any(target_os = "macos", target_os = "ios"))))]
+mod xdg_user_dirs;
+
+#[cfg(all(unix, not(any(target_os = "macos", target_os = "ios"))))]
+mod target_unix_not_mac {
+
+    use std::collections::HashMap;
+    use std::env;
+    use std::path::{Path, PathBuf};
+
+    use super::xdg_user_dirs;
+    use super::{home_dir, is_absolute_path};
+
+    fn user_dir_file(home_dir: &Path) -> PathBuf {
+        env::var_os("XDG_CONFIG_HOME")
+            .and_then(is_absolute_path)
+            .unwrap_or_else(|| home_dir.join(".config"))
+            .join("user-dirs.dirs")
+    }
+
+    // this could be optimized further to not create a map and instead retrieve the requested path only
+    pub fn user_dir(user_dir_name: &str) -> Option<PathBuf> {
+        if let Some(home_dir) = home_dir() {
+            xdg_user_dirs::single(&home_dir, &user_dir_file(&home_dir), user_dir_name).remove(user_dir_name)
+        } else {
+            None
+        }
+    }
+
+    pub fn user_dirs(home_dir_path: &Path) -> HashMap<String, PathBuf> {
+        xdg_user_dirs::all(home_dir_path, &user_dir_file(home_dir_path))
+    }
+}
+
+#[cfg(all(unix, not(any(target_os = "macos", target_os = "ios"))))]
+pub use self::target_unix_not_mac::{user_dir, user_dirs};
+
+#[cfg(target_os = "windows")]
+mod target_windows {
+
+    use std::ffi::OsString;
+    use std::os::windows::ffi::OsStringExt;
+    use std::path::PathBuf;
+    use std::ptr;
+    use std::slice;
+
+    use winapi::shared::winerror;
+    use winapi::um::{combaseapi, knownfolders, shlobj, shtypes, winbase, winnt};
+
+    pub fn known_folder(folder_id: shtypes::REFKNOWNFOLDERID) -> Option<PathBuf> {
+        unsafe {
+            let mut path_ptr: winnt::PWSTR = ptr::null_mut();
+            let result = shlobj::SHGetKnownFolderPath(folder_id, 0, ptr::null_mut(), &mut path_ptr);
+            if result == winerror::S_OK {
+                let len = winbase::lstrlenW(path_ptr) as usize;
+                let path = slice::from_raw_parts(path_ptr, len);
+                let ostr: OsString = OsStringExt::from_wide(path);
+                combaseapi::CoTaskMemFree(path_ptr as *mut winapi::ctypes::c_void);
+                Some(PathBuf::from(ostr))
+            } else {
+                None
+            }
+        }
+    }
+
+    pub fn known_folder_profile() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_Profile)
+    }
+
+    pub fn known_folder_roaming_app_data() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_RoamingAppData)
+    }
+
+    pub fn known_folder_local_app_data() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_LocalAppData)
+    }
+
+    pub fn known_folder_music() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_Music)
+    }
+
+    pub fn known_folder_desktop() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_Desktop)
+    }
+
+    pub fn known_folder_documents() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_Documents)
+    }
+
+    pub fn known_folder_downloads() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_Downloads)
+    }
+
+    pub fn known_folder_pictures() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_Pictures)
+    }
+
+    pub fn known_folder_public() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_Public)
+    }
+    pub fn known_folder_templates() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_Templates)
+    }
+    pub fn known_folder_videos() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_Videos)
+    }
+}
+
+#[cfg(target_os = "windows")]
+pub use self::target_windows::{
+    known_folder, known_folder_desktop, known_folder_documents, known_folder_downloads, known_folder_local_app_data,
+    known_folder_music, known_folder_pictures, known_folder_profile, known_folder_public,
+    known_folder_roaming_app_data, known_folder_templates, known_folder_videos,
+};
diff --git a/vendor/dirs-sys-next/src/xdg_user_dirs.rs b/vendor/dirs-sys-next/src/xdg_user_dirs.rs
new file mode 100644
index 000000000..4fabc81d9
--- /dev/null
+++ b/vendor/dirs-sys-next/src/xdg_user_dirs.rs
@@ -0,0 +1,248 @@
+use std::collections::HashMap;
+use std::ffi::OsString;
+use std::fs;
+use std::io::{self, Read};
+use std::os::unix::ffi::OsStringExt;
+use std::path::{Path, PathBuf};
+use std::str;
+
+/// Returns all XDG user directories obtained from $(XDG_CONFIG_HOME)/user-dirs.dirs.
+pub fn all(home_dir_path: &Path, user_dir_file_path: &Path) -> HashMap<String, PathBuf> {
+    let bytes = read_all(user_dir_file_path).unwrap_or_default();
+    parse_user_dirs(home_dir_path, None, &bytes)
+}
+
+/// Returns a single XDG user directory obtained from $(XDG_CONFIG_HOME)/user-dirs.dirs.
+pub fn single(home_dir_path: &Path, user_dir_file_path: &Path, user_dir_name: &str) -> HashMap<String, PathBuf> {
+    let bytes = read_all(user_dir_file_path).unwrap_or_default();
+    parse_user_dirs(home_dir_path, Some(user_dir_name), &bytes)
+}
+
+fn parse_user_dirs(home_dir: &Path, user_dir: Option<&str>, bytes: &[u8]) -> HashMap<String, PathBuf> {
+    let mut user_dirs = HashMap::new();
+
+    for line in bytes.split(|b| *b == b'\n') {
+        let mut single_dir_found = false;
+        let (key, value) = match split_once(line, b'=') {
+            Some(kv) => kv,
+            None => continue,
+        };
+
+        let key = trim_blank(key);
+        let key = if key.starts_with(b"XDG_") && key.ends_with(b"_DIR") {
+            match str::from_utf8(&key[4..key.len() - 4]) {
+                Ok(key) => {
+                    if user_dir.is_some() && option_contains(user_dir, key) {
+                        single_dir_found = true;
+                        key
+                    } else if user_dir.is_none() {
+                        key
+                    } else {
+                        continue;
+                    }
+                }
+                Err(_) => continue,
+            }
+        } else {
+            continue;
+        };
+
+        // xdg-user-dirs-update uses double quotes and we don't support anything else.
+        let value = trim_blank(value);
+        let mut value =
+            if value.starts_with(b"\"") && value.ends_with(b"\"") { &value[1..value.len() - 1] } else { continue };
+
+        // Path should be either relative to the home directory or absolute.
+        let is_relative = if value == b"$HOME/" {
+            // "Note: To disable a directory, point it to the homedir."
+            // Source: https://www.freedesktop.org/wiki/Software/xdg-user-dirs/
+            // Additionally directory is reassigned to homedir when removed.
+            continue;
+        } else if value.starts_with(b"$HOME/") {
+            value = &value[b"$HOME/".len()..];
+            true
+        } else if value.starts_with(b"/") {
+            false
+        } else {
+            continue;
+        };
+
+        let value = OsString::from_vec(shell_unescape(value));
+
+        let path = if is_relative {
+            let mut path = PathBuf::from(&home_dir);
+            path.push(value);
+            path
+        } else {
+            PathBuf::from(value)
+        };
+
+        user_dirs.insert(key.to_owned(), path);
+        if single_dir_found {
+            break;
+        }
+    }
+
+    user_dirs
+}
+
+/// Reads the entire contents of a file into a byte vector.
+fn read_all(path: &Path) -> io::Result<Vec<u8>> {
+    let mut file = fs::File::open(path)?;
+    let mut bytes = Vec::with_capacity(1024);
+    file.read_to_end(&mut bytes)?;
+    Ok(bytes)
+}
+
+/// Returns bytes before and after first occurrence of separator.
+fn split_once(bytes: &[u8], separator: u8) -> Option<(&[u8], &[u8])> {
+    bytes.iter().position(|b| *b == separator).map(|i| (&bytes[..i], &bytes[i + 1..]))
+}
+
+/// Returns a slice with leading and trailing <blank> characters removed.
+fn trim_blank(bytes: &[u8]) -> &[u8] {
+    // Trim leading <blank> characters.
+    let i = bytes.iter().cloned().take_while(|b| *b == b' ' || *b == b'\t').count();
+    let bytes = &bytes[i..];
+
+    // Trim trailing <blank> characters.
+    let i = bytes.iter().cloned().rev().take_while(|b| *b == b' ' || *b == b'\t').count();
+    &bytes[..bytes.len() - i]
+}
+
+/// Unescape bytes escaped with POSIX shell double-quotes rules (as used by xdg-user-dirs-update).
+fn shell_unescape(escaped: &[u8]) -> Vec<u8> {
+    // We assume that byte string was created by xdg-user-dirs-update which
+    // escapes all characters that might potentially have special meaning,
+    // so there is no need to check if backslash is actually followed by
+    // $ ` " \ or a <newline>.
+
+    let mut unescaped: Vec<u8> = Vec::with_capacity(escaped.len());
+    let mut i = escaped.iter().cloned();
+
+    while let Some(b) = i.next() {
+        if b == b'\\' {
+            if let Some(b) = i.next() {
+                unescaped.push(b);
+            }
+        } else {
+            unescaped.push(b);
+        }
+    }
+
+    unescaped
+}
+
+fn option_contains<T: PartialEq>(option: Option<T>, value: T) -> bool {
+    match option {
+        Some(val) => val == value,
+        None => false,
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::{parse_user_dirs, shell_unescape, split_once, trim_blank};
+    use std::collections::HashMap;
+    use std::path::{Path, PathBuf};
+
+    #[test]
+    fn test_trim_blank() {
+        assert_eq!(b"x", trim_blank(b"x"));
+        assert_eq!(b"", trim_blank(b" \t  "));
+        assert_eq!(b"hello there", trim_blank(b" \t hello there \t "));
+        assert_eq!(b"\r\n", trim_blank(b"\r\n"));
+    }
+
+    #[test]
+    fn test_split_once() {
+        assert_eq!(None, split_once(b"a b c", b'='));
+        assert_eq!(Some((b"before".as_ref(), b"after".as_ref())), split_once(b"before=after", b'='));
+    }
+
+    #[test]
+    fn test_shell_unescape() {
+        assert_eq!(b"abc", shell_unescape(b"abc").as_slice());
+        assert_eq!(b"x\\y$z`", shell_unescape(b"x\\\\y\\$z\\`").as_slice());
+    }
+
+    #[test]
+    fn test_parse_empty() {
+        assert_eq!(HashMap::new(), parse_user_dirs(Path::new("/root/"), None, b""));
+        assert_eq!(HashMap::new(), parse_user_dirs(Path::new("/root/"), Some("MUSIC"), b""));
+    }
+
+    #[test]
+    fn test_absolute_path_is_accepted() {
+        let mut dirs = HashMap::new();
+        dirs.insert("MUSIC".to_owned(), PathBuf::from("/media/music"));
+        let bytes = br#"XDG_MUSIC_DIR="/media/music""#;
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), None, bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), Some("MUSIC"), bytes));
+    }
+
+    #[test]
+    fn test_relative_path_is_rejected() {
+        let dirs = HashMap::new();
+        let bytes = br#"XDG_MUSIC_DIR="music""#;
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), None, bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), Some("MUSIC"), bytes));
+    }
+
+    #[test]
+    fn test_relative_to_home() {
+        let mut dirs = HashMap::new();
+        dirs.insert("MUSIC".to_owned(), PathBuf::from("/home/john/Music"));
+        let bytes = br#"XDG_MUSIC_DIR="$HOME/Music""#;
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), None, bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), Some("MUSIC"), bytes));
+    }
+
+    #[test]
+    fn test_disabled_directory() {
+        let dirs = HashMap::new();
+        let bytes = br#"XDG_MUSIC_DIR="$HOME/""#;
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), None, bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), Some("MUSIC"), bytes));
+    }
+
+    #[test]
+    fn test_parse_user_dirs() {
+        let mut dirs: HashMap<String, PathBuf> = HashMap::new();
+        dirs.insert("DESKTOP".to_string(), PathBuf::from("/home/bob/Desktop"));
+        dirs.insert("DOWNLOAD".to_string(), PathBuf::from("/home/bob/Downloads"));
+        dirs.insert("PICTURES".to_string(), PathBuf::from("/home/eve/pics"));
+
+        let bytes = br#"
+# This file is written by xdg-user-dirs-update
+# If you want to change or add directories, just edit the line you're
+# interested in. All local changes will be retained on the next run.
+# Format is XDG_xxx_DIR="$HOME/yyy", where yyy is a shell-escaped
+# homedir-relative path, or XDG_xxx_DIR="/yyy", where /yyy is an
+# absolute path. No other format is supported.
+XDG_DESKTOP_DIR="$HOME/Desktop"
+XDG_DOWNLOAD_DIR="$HOME/Downloads"
+XDG_TEMPLATES_DIR=""
+XDG_PUBLICSHARE_DIR="$HOME"
+XDG_DOCUMENTS_DIR="$HOME/"
+XDG_PICTURES_DIR="/home/eve/pics"
+XDG_VIDEOS_DIR="$HOxyzME/Videos"
+"#;
+
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), None, bytes));
+
+        let mut dirs: HashMap<String, PathBuf> = HashMap::new();
+        dirs.insert("DESKTOP".to_string(), PathBuf::from("/home/bob/Desktop"));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), Some("DESKTOP"), bytes));
+
+        let mut dirs: HashMap<String, PathBuf> = HashMap::new();
+        dirs.insert("PICTURES".to_string(), PathBuf::from("/home/eve/pics"));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), Some("PICTURES"), bytes));
+
+        let dirs: HashMap<String, PathBuf> = HashMap::new();
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), Some("TEMPLATES"), bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), Some("PUBLICSHARE"), bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), Some("DOCUMENTS"), bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), Some("VIDEOS"), bytes));
+    }
+}
diff --git a/vendor/dirs-sys/.cargo-checksum.json b/vendor/dirs-sys/.cargo-checksum.json
new file mode 100644
index 000000000..d095c8ac5
--- /dev/null
+++ b/vendor/dirs-sys/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"Cargo.toml":"141e80efbaefa9322513f4900a2ac4c5209b135bb36bf7ca347e3deebc75965f","LICENSE-APACHE":"d3174ad63e721d4c9dccb8ad4320848992d314369bc46319720b5802c9153fe9","LICENSE-MIT":"6a2e0ade09a7d5f816f11566fee2b151b32235a7fad52b41d49cce96f833c1a9","README.md":"1c818a4ea3bf85aaafe27421528a285db92c1f20ae9651c669379cb603495f37","src/lib.rs":"5c1aff249eb1f6abd52785f58318c1b0641ca810c15ce349e9c3797d86b1c8c5","src/xdg_user_dirs.rs":"225ae21a97b839330a8c3bc8e0a0b48e40580cbae25bfc47581dff724bb0ebec"},"package":"03d86534ed367a67548dc68113a0f5db55432fdfbb6e6f9d77704397d95d5780"}
\ No newline at end of file
diff --git a/vendor/dirs-sys/Cargo.toml b/vendor/dirs-sys/Cargo.toml
new file mode 100644
index 000000000..6c4100798
--- /dev/null
+++ b/vendor/dirs-sys/Cargo.toml
@@ -0,0 +1,28 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies
+#
+# If you believe there's an error in this file please file an
+# issue against the rust-lang/cargo repository. If you're
+# editing this file be aware that the upstream Cargo.toml
+# will likely look very different (and much more reasonable)
+
+[package]
+name = "dirs-sys"
+version = "0.3.6"
+authors = ["Simon Ochsenreither <simon@ochsenreither.de>"]
+description = "System-level helper functions for the dirs and directories crates."
+readme = "README.md"
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/dirs-dev/dirs-sys-rs"
+[target."cfg(target_os = \"redox\")".dependencies.redox_users]
+version = "0.4"
+default-features = false
+[target."cfg(unix)".dependencies.libc]
+version = "0.2"
+[target."cfg(windows)".dependencies.winapi]
+version = "0.3"
+features = ["knownfolders", "objbase", "shlobj", "winbase", "winerror"]
diff --git a/vendor/dirs-sys/LICENSE-APACHE b/vendor/dirs-sys/LICENSE-APACHE
new file mode 100644
index 000000000..91e18a62b
--- /dev/null
+++ b/vendor/dirs-sys/LICENSE-APACHE
@@ -0,0 +1,174 @@
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+   "License" shall mean the terms and conditions for use, reproduction,
+   and distribution as defined by Sections 1 through 9 of this document.
+
+   "Licensor" shall mean the copyright owner or entity authorized by
+   the copyright owner that is granting the License.
+
+   "Legal Entity" shall mean the union of the acting entity and all
+   other entities that control, are controlled by, or are under common
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+   "control" means (i) the power, direct or indirect, to cause the
+   direction or management of such entity, whether by contract or
+   otherwise, or (ii) ownership of fifty percent (50%) or more of the
+   outstanding shares, or (iii) beneficial ownership of such entity.
+
+   "You" (or "Your") shall mean an individual or Legal Entity
+   exercising permissions granted by this License.
+
+   "Source" form shall mean the preferred form for making modifications,
+   including but not limited to software source code, documentation
+   source, and configuration files.
+
+   "Object" form shall mean any form resulting from mechanical
+   transformation or translation of a Source form, including but
+   not limited to compiled object code, generated documentation,
+   and conversions to other media types.
+
+   "Work" shall mean the work of authorship, whether in Source or
+   Object form, made available under the License, as indicated by a
+   copyright notice that is included in or attached to the work
+   (an example is provided in the Appendix below).
+
+   "Derivative Works" shall mean any work, whether in Source or Object
+   form, that is based on (or derived from) the Work and for which the
+   editorial revisions, annotations, elaborations, or other modifications
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+   the Work and Derivative Works thereof.
+
+   "Contribution" shall mean any work of authorship, including
+   the original version of the Work and any modifications or additions
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+   "Contributor" shall mean Licensor and any individual or Legal Entity
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+
+2. Grant of Copyright License. Subject to the terms and conditions of
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+3. Grant of Patent License. Subject to the terms and conditions of
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+
+4. Redistribution. You may reproduce and distribute copies of the
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+   (a) You must give any other recipients of the Work or
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+
+   (b) You must cause any modified files to carry prominent notices
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+
+   (c) You must retain, in the Source form of any Derivative Works
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+
+   (d) If the Work includes a "NOTICE" text file as part of its
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+
+   You may add Your own copyright statement to Your modifications and
+   may provide additional or different license terms and conditions
+   for use, reproduction, or distribution of Your modifications, or
+   for any such Derivative Works as a whole, provided Your use,
+   reproduction, and distribution of the Work otherwise complies with
+   the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise,
+   any Contribution intentionally submitted for inclusion in the Work
+   by You to the Licensor shall be under the terms and conditions of
+   this License, without any additional terms or conditions.
+   Notwithstanding the above, nothing herein shall supersede or modify
+   the terms of any separate license agreement you may have executed
+   with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade
+   names, trademarks, service marks, or product names of the Licensor,
+   except as required for reasonable and customary use in describing the
+   origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or
+   agreed to in writing, Licensor provides the Work (and each
+   Contributor provides its Contributions) on an "AS IS" BASIS,
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+   PARTICULAR PURPOSE. You are solely responsible for determining the
+   appropriateness of using or redistributing the Work and assume any
+   risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory,
+   whether in tort (including negligence), contract, or otherwise,
+   unless required by applicable law (such as deliberate and grossly
+   negligent acts) or agreed to in writing, shall any Contributor be
+   liable to You for damages, including any direct, indirect, special,
+   incidental, or consequential damages of any character arising as a
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+   Work (including but not limited to damages for loss of goodwill,
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+9. Accepting Warranty or Additional Liability. While redistributing
+   the Work or Derivative Works thereof, You may choose to offer,
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+   defend, and hold each Contributor harmless for any liability
+   incurred by, or claims asserted against, such Contributor by reason
+   of your accepting any such warranty or additional liability.
diff --git a/vendor/dirs-sys/LICENSE-MIT b/vendor/dirs-sys/LICENSE-MIT
new file mode 100644
index 000000000..1452dc143
--- /dev/null
+++ b/vendor/dirs-sys/LICENSE-MIT
@@ -0,0 +1,19 @@
+Copyright (c) 2018-2019 dirs-rs contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/vendor/dirs-sys/README.md b/vendor/dirs-sys/README.md
new file mode 100644
index 000000000..c1234148a
--- /dev/null
+++ b/vendor/dirs-sys/README.md
@@ -0,0 +1,61 @@
+[![crates.io](https://img.shields.io/crates/v/dirs-sys.svg)](https://crates.io/crates/dirs-sys)
+[![API documentation](https://docs.rs/dirs-sys/badge.svg)](https://docs.rs/dirs-sys/)
+![actively developed](https://img.shields.io/badge/maintenance-as--is-yellow.svg)
+[![TravisCI status](https://img.shields.io/travis/dirs-dev/dirs-sys-rs/master.svg?label=Linux/macOS%20build)](https://travis-ci.org/dirs-dev/dirs-sys-rs)
+[![AppVeyor status](https://img.shields.io/appveyor/ci/soc/dirs-sys-rs/master.svg?label=Windows%20build)](https://ci.appveyor.com/project/soc/dirs-sys-rs/branch/master)
+![License: MIT/Apache-2.0](https://img.shields.io/badge/license-MIT%2FApache--2.0-orange.svg)
+
+# `dirs-sys`
+
+System-level helper functions for the [`dirs`](https://github.com/dirs-dev/dirs-rs)
+and [`directories`](https://github.com/dirs-dev/directories-rs) crates.
+
+_Do not use this library directly, use [`dirs`](https://github.com/dirs-dev/dirs-rs)
+or [`directories`](https://github.com/dirs-dev/directories-rs)._
+
+## Compatibility
+
+This crate only exists to facilitate code sharing between [`dirs`](https://github.com/dirs-dev/dirs-rs)
+and [`directories`](https://github.com/dirs-dev/directories-rs).
+
+There are no compatibility guarantees whatsoever.
+Functions may change or disappear without warning or any kind of deprecation period.  
+
+## Platforms
+
+This library is written in Rust, and supports Linux, Redox, macOS and Windows.
+Other platforms are also supported; they use the Linux conventions.
+
+The minimal required version of Rust is 1.13 except for Redox, where the minimum Rust version
+depends on the [`redox_users`](https://crates.io/crates/redox_users) crate.
+
+## Build
+
+It's possible to cross-compile this library if the necessary toolchains are installed with rustup.
+This is helpful to ensure a change has not broken compilation on a different platform.
+
+The following commands will build this library on Linux, macOS and Windows:
+
+```
+cargo build --target=x86_64-unknown-linux-gnu
+cargo build --target=x86_64-pc-windows-gnu
+cargo build --target=x86_64-apple-darwin
+cargo build --target=x86_64-unknown-redox
+```
+
+## License
+
+Licensed under either of
+
+ * Apache License, Version 2.0
+   ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+ * MIT license
+   ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+
+at your option.
+
+## Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in the work by you, as defined in the Apache-2.0 license, shall be
+dual licensed as above, without any additional terms or conditions.
diff --git a/vendor/dirs-sys/src/lib.rs b/vendor/dirs-sys/src/lib.rs
new file mode 100644
index 000000000..cd5bb4794
--- /dev/null
+++ b/vendor/dirs-sys/src/lib.rs
@@ -0,0 +1,216 @@
+use std::ffi::OsString;
+use std::path::PathBuf;
+
+// we don't need to explicitly handle empty strings in the code above,
+// because an empty string is not considered to be a absolute path here.
+pub fn is_absolute_path(path: OsString) -> Option<PathBuf> {
+    let path = PathBuf::from(path);
+    if path.is_absolute() {
+        Some(path)
+    } else {
+        None
+    }
+}
+
+#[cfg(all(unix, not(target_os = "redox")))]
+extern crate libc;
+
+#[cfg(all(unix, not(target_os = "redox")))]
+mod target_unix_not_redox {
+
+use std::env;
+use std::ffi::{CStr, OsString};
+use std::mem;
+use std::os::unix::ffi::OsStringExt;
+use std::path::PathBuf;
+use std::ptr;
+
+use super::libc;
+
+// https://github.com/rust-lang/rust/blob/master/src/libstd/sys/unix/os.rs#L498
+pub fn home_dir() -> Option<PathBuf> {
+    return env::var_os("HOME")
+        .and_then(|h| if h.is_empty() { None } else { Some(h) })
+        .or_else(|| unsafe { fallback() })
+        .map(PathBuf::from);
+
+    #[cfg(any(target_os = "android", target_os = "ios", target_os = "emscripten"))]
+    unsafe fn fallback() -> Option<OsString> {
+        None
+    }
+    #[cfg(not(any(target_os = "android", target_os = "ios", target_os = "emscripten")))]
+    unsafe fn fallback() -> Option<OsString> {
+        let amt = match libc::sysconf(libc::_SC_GETPW_R_SIZE_MAX) {
+            n if n < 0 => 512 as usize,
+            n => n as usize,
+        };
+        let mut buf = Vec::with_capacity(amt);
+        let mut passwd: libc::passwd = mem::zeroed();
+        let mut result = ptr::null_mut();
+        match libc::getpwuid_r(
+            libc::getuid(),
+            &mut passwd,
+            buf.as_mut_ptr(),
+            buf.capacity(),
+            &mut result,
+        ) {
+            0 if !result.is_null() => {
+                let ptr = passwd.pw_dir as *const _;
+                let bytes = CStr::from_ptr(ptr).to_bytes();
+                if bytes.is_empty() {
+                    None
+                } else {
+                    Some(OsStringExt::from_vec(bytes.to_vec()))
+                }
+            }
+            _ => None,
+        }
+    }
+}
+
+}
+
+#[cfg(all(unix, not(target_os = "redox")))]
+pub use self::target_unix_not_redox::home_dir;
+
+#[cfg(target_os = "redox")]
+extern crate redox_users;
+
+#[cfg(target_os = "redox")]
+mod target_redox {
+
+use std::path::PathBuf;
+
+use super::redox_users::{All, AllUsers, Config};
+
+pub fn home_dir() -> Option<PathBuf> {
+    let current_uid = redox_users::get_uid().ok()?;
+    let users = AllUsers::new(Config::default()).ok()?;
+    let user = users.get_by_id(current_uid)?;
+
+    Some(PathBuf::from(user.home.clone()))
+}
+
+}
+
+#[cfg(target_os = "redox")]
+pub use self::target_redox::home_dir;
+
+#[cfg(all(unix, not(any(target_os = "macos", target_os = "ios"))))]
+mod xdg_user_dirs;
+
+#[cfg(all(unix, not(any(target_os = "macos", target_os = "ios"))))]
+mod target_unix_not_mac {
+
+use std::collections::HashMap;
+use std::env;
+use std::path::{Path, PathBuf};
+
+use super::{home_dir, is_absolute_path};
+use super::xdg_user_dirs;
+
+fn user_dir_file(home_dir: &Path) -> PathBuf {
+    env::var_os("XDG_CONFIG_HOME").and_then(is_absolute_path).unwrap_or_else(|| home_dir.join(".config")).join("user-dirs.dirs")
+}
+
+// this could be optimized further to not create a map and instead retrieve the requested path only
+pub fn user_dir(user_dir_name: &str) -> Option<PathBuf> {
+    if let Some(home_dir) = home_dir() {
+        xdg_user_dirs::single(&home_dir, &user_dir_file(&home_dir), user_dir_name).remove(user_dir_name)
+    } else {
+        None
+    }
+}
+
+pub fn user_dirs(home_dir_path: &Path) -> HashMap<String, PathBuf> {
+    xdg_user_dirs::all(home_dir_path, &user_dir_file(home_dir_path))
+}
+
+}
+
+#[cfg(all(unix, not(any(target_os = "macos", target_os = "ios"))))]
+pub use self::target_unix_not_mac::{user_dir, user_dirs};
+
+#[cfg(target_os = "windows")]
+extern crate winapi;
+
+#[cfg(target_os = "windows")]
+mod target_windows {
+
+use std::ffi::OsString;
+use std::os::windows::ffi::OsStringExt;
+use std::path::PathBuf;
+use std::ptr;
+use std::slice;
+
+use super::winapi;
+use super::winapi::shared::winerror;
+use super::winapi::um::{combaseapi, knownfolders, shlobj, shtypes, winbase, winnt};
+
+pub fn known_folder(folder_id: shtypes::REFKNOWNFOLDERID) -> Option<PathBuf> {
+    unsafe {
+        let mut path_ptr: winnt::PWSTR = ptr::null_mut();
+        let result = shlobj::SHGetKnownFolderPath(folder_id, 0, ptr::null_mut(), &mut path_ptr);
+        if result == winerror::S_OK {
+            let len = winbase::lstrlenW(path_ptr) as usize;
+            let path = slice::from_raw_parts(path_ptr, len);
+            let ostr: OsString = OsStringExt::from_wide(path);
+            combaseapi::CoTaskMemFree(path_ptr as *mut winapi::ctypes::c_void);
+            Some(PathBuf::from(ostr))
+        } else {
+            combaseapi::CoTaskMemFree(path_ptr as *mut winapi::ctypes::c_void);
+            None
+        }
+    }
+}
+
+pub fn known_folder_profile() -> Option<PathBuf> {
+    known_folder(&knownfolders::FOLDERID_Profile)
+}
+
+pub fn known_folder_roaming_app_data() -> Option<PathBuf> {
+    known_folder(&knownfolders::FOLDERID_RoamingAppData)
+}
+
+pub fn known_folder_local_app_data() -> Option<PathBuf> {
+    known_folder(&knownfolders::FOLDERID_LocalAppData)
+}
+
+pub fn known_folder_music() -> Option<PathBuf> {
+    known_folder(&knownfolders::FOLDERID_Music)
+}
+
+pub fn known_folder_desktop() -> Option<PathBuf> {
+    known_folder(&knownfolders::FOLDERID_Desktop)
+}
+
+pub fn known_folder_documents() -> Option<PathBuf> {
+    known_folder(&knownfolders::FOLDERID_Documents)
+}
+
+pub fn known_folder_downloads() -> Option<PathBuf> {
+    known_folder(&knownfolders::FOLDERID_Downloads)
+}
+
+pub fn known_folder_pictures() -> Option<PathBuf> {
+    known_folder(&knownfolders::FOLDERID_Pictures)
+}
+
+pub fn known_folder_public() -> Option<PathBuf> {
+    known_folder(&knownfolders::FOLDERID_Public)
+}
+pub fn known_folder_templates() -> Option<PathBuf> {
+    known_folder(&knownfolders::FOLDERID_Templates)
+}
+pub fn known_folder_videos() -> Option<PathBuf> {
+    known_folder(&knownfolders::FOLDERID_Videos)
+}
+
+}
+
+#[cfg(target_os = "windows")]
+pub use self::target_windows::{
+    known_folder, known_folder_profile, known_folder_roaming_app_data, known_folder_local_app_data,
+    known_folder_music, known_folder_desktop, known_folder_documents, known_folder_downloads,
+    known_folder_pictures, known_folder_public, known_folder_templates, known_folder_videos
+};
diff --git a/vendor/dirs-sys/src/xdg_user_dirs.rs b/vendor/dirs-sys/src/xdg_user_dirs.rs
new file mode 100644
index 000000000..de7e9e9d2
--- /dev/null
+++ b/vendor/dirs-sys/src/xdg_user_dirs.rs
@@ -0,0 +1,252 @@
+use std::collections::HashMap;
+use std::ffi::OsString;
+use std::fs;
+use std::io::{self, Read};
+use std::os::unix::ffi::OsStringExt;
+use std::path::{Path, PathBuf};
+use std::str;
+
+/// Returns all XDG user directories obtained from $(XDG_CONFIG_HOME)/user-dirs.dirs.
+pub fn all(home_dir_path: &Path, user_dir_file_path: &Path) -> HashMap<String, PathBuf> {
+    let bytes = read_all(user_dir_file_path).unwrap_or(Vec::new());
+    parse_user_dirs(home_dir_path, None, &bytes)
+}
+
+/// Returns a single XDG user directory obtained from $(XDG_CONFIG_HOME)/user-dirs.dirs.
+pub fn single(home_dir_path: &Path, user_dir_file_path: &Path, user_dir_name: &str) -> HashMap<String, PathBuf> {
+    let bytes = read_all(user_dir_file_path).unwrap_or(Vec::new());
+    parse_user_dirs(home_dir_path, Some(user_dir_name), &bytes)
+}
+
+fn parse_user_dirs(home_dir: &Path, user_dir: Option<&str>, bytes: &[u8]) -> HashMap<String, PathBuf> {
+    let mut user_dirs = HashMap::new();
+
+    for line in bytes.split(|b| *b == b'\n') {
+        let mut single_dir_found = false;
+        let (key, value) = match split_once(line, b'=') {
+            Some(kv) => kv,
+            None => continue,
+        };
+
+        let key = trim_blank(key);
+        let key = if key.starts_with(b"XDG_") && key.ends_with(b"_DIR") {
+            match str::from_utf8(&key[4..key.len()-4]) {
+                Ok(key) =>
+                    if user_dir.is_some() && option_contains(user_dir, key) {
+                        single_dir_found = true;
+                        key
+                    } else if user_dir.is_none() {
+                        key
+                    } else {
+                        continue
+                    },
+                Err(_)  => continue,
+            }
+        } else {
+            continue
+        };
+
+        // xdg-user-dirs-update uses double quotes and we don't support anything else.
+        let value = trim_blank(value);
+        let mut value = if value.starts_with(b"\"") && value.ends_with(b"\"") {
+            &value[1..value.len()-1]
+        } else {
+            continue
+        };
+
+        // Path should be either relative to the home directory or absolute.
+        let is_relative = if value == b"$HOME/" {
+            // "Note: To disable a directory, point it to the homedir."
+            // Source: https://www.freedesktop.org/wiki/Software/xdg-user-dirs/
+            // Additionally directory is reassigned to homedir when removed.
+            continue
+        } else if value.starts_with(b"$HOME/") {
+            value = &value[b"$HOME/".len()..];
+            true
+        } else if value.starts_with(b"/") {
+            false
+        } else {
+            continue
+        };
+
+        let value = OsString::from_vec(shell_unescape(value));
+
+        let path = if is_relative {
+            let mut path = PathBuf::from(&home_dir);
+            path.push(value);
+            path
+        } else {
+            PathBuf::from(value)
+        };
+
+        user_dirs.insert(key.to_owned(), path);
+        if single_dir_found {
+            break;
+        }
+    }
+
+    user_dirs
+}
+
+/// Reads the entire contents of a file into a byte vector.
+fn read_all(path: &Path) -> io::Result<Vec<u8>> {
+    let mut file = fs::File::open(path)?;
+    let mut bytes = Vec::with_capacity(1024);
+    file.read_to_end(&mut bytes)?;
+    Ok(bytes)
+}
+
+/// Returns bytes before and after first occurrence of separator.
+fn split_once(bytes: &[u8], separator: u8) -> Option<(&[u8], &[u8])> {
+    bytes.iter().position(|b| *b == separator).map(|i| {
+        (&bytes[..i], &bytes[i+1..])
+    })
+}
+
+/// Returns a slice with leading and trailing <blank> characters removed.
+fn trim_blank(bytes: &[u8]) -> &[u8] {
+    // Trim leading <blank> characters.
+    let i = bytes.iter().cloned().take_while(|b| *b == b' ' || *b == b'\t').count();
+    let bytes = &bytes[i..];
+
+    // Trim trailing <blank> characters.
+    let i = bytes.iter().cloned().rev().take_while(|b| *b == b' ' || *b == b'\t').count();
+    &bytes[..bytes.len()-i]
+}
+
+/// Unescape bytes escaped with POSIX shell double-quotes rules (as used by xdg-user-dirs-update).
+fn shell_unescape(escaped: &[u8]) -> Vec<u8> {
+    // We assume that byte string was created by xdg-user-dirs-update which
+    // escapes all characters that might potentially have special meaning,
+    // so there is no need to check if backslash is actually followed by
+    // $ ` " \ or a <newline>.
+
+    let mut unescaped: Vec<u8> = Vec::with_capacity(escaped.len());
+    let mut i = escaped.iter().cloned();
+
+    while let Some(b) = i.next() {
+        if b == b'\\' {
+            if let Some(b) = i.next() {
+                unescaped.push(b);
+            }
+        } else {
+            unescaped.push(b);
+        }
+    }
+
+    unescaped
+}
+
+fn option_contains<T : PartialEq>(option: Option<T>, value: T) -> bool {
+    match option {
+        Some(val) => val == value,
+        None => false
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use std::collections::HashMap;
+    use std::path::{Path, PathBuf};
+    use super::{trim_blank, shell_unescape, split_once, parse_user_dirs};
+
+    #[test]
+    fn test_trim_blank() {
+        assert_eq!(b"x", trim_blank(b"x"));
+        assert_eq!(b"", trim_blank(b" \t  "));
+        assert_eq!(b"hello there", trim_blank(b" \t hello there \t "));
+        assert_eq!(b"\r\n", trim_blank(b"\r\n"));
+    }
+
+    #[test]
+    fn test_split_once() {
+        assert_eq!(None, split_once(b"a b c", b'='));
+        assert_eq!(Some((b"before".as_ref(), b"after".as_ref())), split_once(b"before=after", b'='));
+    }
+
+    #[test]
+    fn test_shell_unescape() {
+        assert_eq!(b"abc", shell_unescape(b"abc").as_slice());
+        assert_eq!(b"x\\y$z`", shell_unescape(b"x\\\\y\\$z\\`").as_slice());
+    }
+
+    #[test]
+    fn test_parse_empty() {
+        assert_eq!(HashMap::new(), parse_user_dirs(Path::new("/root/"), None, b""));
+        assert_eq!(HashMap::new(), parse_user_dirs(Path::new("/root/"), Some("MUSIC"), b""));
+    }
+
+    #[test]
+    fn test_absolute_path_is_accepted() {
+        let mut dirs = HashMap::new();
+        dirs.insert("MUSIC".to_owned(), PathBuf::from("/media/music"));
+        let bytes = br#"XDG_MUSIC_DIR="/media/music""#;
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), None, bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), Some("MUSIC"), bytes));
+    }
+
+    #[test]
+    fn test_relative_path_is_rejected() {
+        let dirs = HashMap::new();
+        let bytes = br#"XDG_MUSIC_DIR="music""#;
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), None, bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), Some("MUSIC"), bytes));
+    }
+
+    #[test]
+    fn test_relative_to_home() {
+        let mut dirs = HashMap::new();
+        dirs.insert("MUSIC".to_owned(), PathBuf::from("/home/john/Music"));
+        let bytes = br#"XDG_MUSIC_DIR="$HOME/Music""#;
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), None, bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), Some("MUSIC"), bytes));
+    }
+
+    #[test]
+    fn test_disabled_directory() {
+        let dirs = HashMap::new();
+        let bytes = br#"XDG_MUSIC_DIR="$HOME/""#;
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), None, bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), Some("MUSIC"), bytes));
+    }
+
+    #[test]
+    fn test_parse_user_dirs() {
+        let mut dirs: HashMap<String, PathBuf> = HashMap::new();
+        dirs.insert("DESKTOP".to_string(), PathBuf::from("/home/bob/Desktop"));
+        dirs.insert("DOWNLOAD".to_string(), PathBuf::from("/home/bob/Downloads"));
+        dirs.insert("PICTURES".to_string(), PathBuf::from("/home/eve/pics"));
+
+        let bytes = br#"
+# This file is written by xdg-user-dirs-update
+# If you want to change or add directories, just edit the line you're
+# interested in. All local changes will be retained on the next run.
+# Format is XDG_xxx_DIR="$HOME/yyy", where yyy is a shell-escaped
+# homedir-relative path, or XDG_xxx_DIR="/yyy", where /yyy is an
+# absolute path. No other format is supported.
+XDG_DESKTOP_DIR="$HOME/Desktop"
+XDG_DOWNLOAD_DIR="$HOME/Downloads"
+XDG_TEMPLATES_DIR=""
+XDG_PUBLICSHARE_DIR="$HOME"
+XDG_DOCUMENTS_DIR="$HOME/"
+XDG_PICTURES_DIR="/home/eve/pics"
+XDG_VIDEOS_DIR="$HOxyzME/Videos"
+"#;
+
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), None, bytes));
+
+        let mut dirs: HashMap<String, PathBuf> = HashMap::new();
+        dirs.insert("DESKTOP".to_string(), PathBuf::from("/home/bob/Desktop"));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), Some("DESKTOP"), bytes));
+
+        let mut dirs: HashMap<String, PathBuf> = HashMap::new();
+        dirs.insert("PICTURES".to_string(), PathBuf::from("/home/eve/pics"));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), Some("PICTURES"), bytes));
+
+        let dirs: HashMap<String, PathBuf> = HashMap::new();
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), Some("TEMPLATES"), bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), Some("PUBLICSHARE"), bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), Some("DOCUMENTS"), bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), Some("VIDEOS"), bytes));
+    }
+}
diff --git a/vendor/dirs/.cargo-checksum.json b/vendor/dirs/.cargo-checksum.json
new file mode 100644
index 000000000..c2d4c80af
--- /dev/null
+++ b/vendor/dirs/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"Cargo.toml":"5bb02a35a3ac857c60ab16972decfea610ec3bed296a41d0235dc663a64495f6","LICENSE-APACHE":"d3174ad63e721d4c9dccb8ad4320848992d314369bc46319720b5802c9153fe9","LICENSE-MIT":"6a2e0ade09a7d5f816f11566fee2b151b32235a7fad52b41d49cce96f833c1a9","README.md":"84fdbe7a22dd22574249330ce2146d4237391989e66377f087f66eca6313c032","src/lib.rs":"d0c92741b50d0b793591e9731a71053b88a8a6e8d0e808f2d3afb127eab04b6f","src/lin.rs":"4b556c3f8a02571cd62756ff542172e5c438395c600582abb76be049c3d570c8","src/mac.rs":"4ee036a83508eae7c51ae9ccdb8165603df96a580501c11c9c2d98cd672e7940","src/wasm.rs":"6b7edb4a708fef10d95ac32aa4f7a81d465794edeb805dc7c2168e351daaca2c","src/win.rs":"8296c5f68e85ba456b48a5153cffded163d12e431a0929daa873ae09e5ce3d10"},"package":"ca3aa72a6f96ea37bbc5aa912f6788242832f75369bdfdadcb0e38423f100059"}
\ No newline at end of file
diff --git a/vendor/dirs/Cargo.toml b/vendor/dirs/Cargo.toml
new file mode 100644
index 000000000..b6151d10b
--- /dev/null
+++ b/vendor/dirs/Cargo.toml
@@ -0,0 +1,22 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+name = "dirs"
+version = "4.0.0"
+authors = ["Simon Ochsenreither <simon@ochsenreither.de>"]
+description = "A tiny low-level library that provides platform-specific standard locations of directories for config, cache and other data on Linux, Windows, macOS and Redox by leveraging the mechanisms defined by the XDG base/user directory specifications on Linux, the Known Folder API on Windows, and the Standard Directory guidelines on macOS."
+readme = "README.md"
+keywords = ["xdg", "basedir", "app_dirs", "path", "folder"]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/soc/dirs-rs"
+[dependencies.dirs-sys]
+version = "0.3.6"
diff --git a/vendor/dirs/LICENSE-APACHE b/vendor/dirs/LICENSE-APACHE
new file mode 100644
index 000000000..91e18a62b
--- /dev/null
+++ b/vendor/dirs/LICENSE-APACHE
@@ -0,0 +1,174 @@
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+   "License" shall mean the terms and conditions for use, reproduction,
+   and distribution as defined by Sections 1 through 9 of this document.
+
+   "Licensor" shall mean the copyright owner or entity authorized by
+   the copyright owner that is granting the License.
+
+   "Legal Entity" shall mean the union of the acting entity and all
+   other entities that control, are controlled by, or are under common
+   control with that entity. For the purposes of this definition,
+   "control" means (i) the power, direct or indirect, to cause the
+   direction or management of such entity, whether by contract or
+   otherwise, or (ii) ownership of fifty percent (50%) or more of the
+   outstanding shares, or (iii) beneficial ownership of such entity.
+
+   "You" (or "Your") shall mean an individual or Legal Entity
+   exercising permissions granted by this License.
+
+   "Source" form shall mean the preferred form for making modifications,
+   including but not limited to software source code, documentation
+   source, and configuration files.
+
+   "Object" form shall mean any form resulting from mechanical
+   transformation or translation of a Source form, including but
+   not limited to compiled object code, generated documentation,
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diff --git a/vendor/dirs/LICENSE-MIT b/vendor/dirs/LICENSE-MIT
new file mode 100644
index 000000000..1452dc143
--- /dev/null
+++ b/vendor/dirs/LICENSE-MIT
@@ -0,0 +1,19 @@
+Copyright (c) 2018-2019 dirs-rs contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/vendor/dirs/README.md b/vendor/dirs/README.md
new file mode 100644
index 000000000..c1458bf86
--- /dev/null
+++ b/vendor/dirs/README.md
@@ -0,0 +1,218 @@
+[![crates.io](https://img.shields.io/crates/v/dirs.svg)](https://crates.io/crates/dirs)
+[![API documentation](https://docs.rs/dirs/badge.svg)](https://docs.rs/dirs/)
+![actively developed](https://img.shields.io/badge/maintenance-actively--developed-brightgreen.svg)
+[![TravisCI status](https://img.shields.io/travis/dirs-dev/dirs-rs/master.svg?label=Linux/macOS%20build)](https://travis-ci.org/dirs-dev/dirs-rs)
+[![AppVeyor status](https://img.shields.io/appveyor/ci/soc/dirs-rs/master.svg?label=Windows%20build)](https://ci.appveyor.com/project/soc/dirs-rs/branch/master)
+![License: MIT/Apache-2.0](https://img.shields.io/badge/license-MIT%2FApache--2.0-orange.svg)
+
+# `dirs`
+
+## Introduction
+
+- a tiny low-level library with a minimal API
+- that provides the platform-specific, user-accessible locations
+- for retrieving and storing configuration, cache and other data
+- on Linux, Redox, Windows (≥ Vista), macOS and other platforms.
+
+The library provides the location of these directories by leveraging the mechanisms defined by
+- the [XDG base directory](https://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html) and
+  the [XDG user directory](https://www.freedesktop.org/wiki/Software/xdg-user-dirs/) specifications on Linux and Redox
+- the [Known Folder](https://msdn.microsoft.com/en-us/library/windows/desktop/dd378457.aspx) API on Windows
+- the [Standard Directories](https://developer.apple.com/library/content/documentation/FileManagement/Conceptual/FileSystemProgrammingGuide/FileSystemOverview/FileSystemOverview.html#//apple_ref/doc/uid/TP40010672-CH2-SW6)
+  guidelines on macOS
+
+## Platforms
+
+This library is written in Rust, and supports Linux, Redox, macOS and Windows.
+Other platforms are also supported; they use the Linux conventions.
+
+The minimal required version of Rust is 1.13 except for Redox, where the minimum Rust version
+depends on the [`redox_users`](https://crates.io/crates/redox_users) crate.
+
+It's mid-level sister library, _directories_, is available for Rust ([directories-rs](https://github.com/dirs-dev/directories-rs))
+and on the JVM ([directories-jvm](https://github.com/dirs-dev/directories-jvm)).
+
+## Usage
+
+#### Dependency
+
+Add the library as a dependency to your project by inserting
+
+```toml
+dirs = "4.0"
+```
+
+into the `[dependencies]` section of your Cargo.toml file.
+
+If you are upgrading from version 2, please read the [section on breaking changes](#3) first.
+
+#### Example
+
+Library run by user Alice:
+
+```rust
+extern crate dirs;
+
+dirs::home_dir();
+// Lin: Some(/home/alice)
+// Win: Some(C:\Users\Alice)
+// Mac: Some(/Users/Alice)
+
+dirs::audio_dir();
+// Lin: Some(/home/alice/Music)
+// Win: Some(C:\Users\Alice\Music)
+// Mac: Some(/Users/Alice/Music)
+
+dirs::config_dir();
+// Lin: Some(/home/alice/.config)
+// Win: Some(C:\Users\Alice\AppData\Roaming)
+// Mac: Some(/Users/Alice/Library/Application Support)
+
+dirs::executable_dir();
+// Lin: Some(/home/alice/.local/bin)
+// Win: None
+// Mac: None
+```
+
+## Design Goals
+
+- The _dirs_ library is a low-level crate designed to provide the paths to standard directories
+  as defined by operating systems rules or conventions.<br/>
+  If your requirements are more complex, e. g. computing cache, config, etc. paths for specific
+  applications or projects, consider using [directories](https://github.com/dirs-dev/directories-rs)
+  instead.
+- This library does not create directories or check for their existence. The library only provides
+  information on what the path to a certain directory _should_ be.<br/>
+  How this information is used is a decision that developers need to make based on the requirements
+  of each individual application.
+- This library is intentionally focused on providing information on user-writable directories only,
+  as there is no discernible benefit in returning a path that points to a user-level, writable
+  directory on one operating system, but a system-level, read-only directory on another.<br/>
+  The confusion and unexpected failure modes of such an approach would be immense.
+  - `executable_dir` is specified to provide the path to a user-writable directory for binaries.<br/>
+    As such a directory only commonly exists on Linux, it returns `None` on macOS and Windows.
+  - `font_dir` is specified to provide the path to a user-writable directory for fonts.<br/>
+    As such a directory only exists on Linux and macOS, it returns `None` on Windows.
+  - `runtime_dir` is specified to provide the path to a directory for non-essential runtime data.
+    It is required that this directory is created when the user logs in, is only accessible by the
+    user itself, is deleted when the user logs out, and supports all filesystem features of the
+    operating system.<br/>
+    As such a directory only commonly exists on Linux, it returns `None` on macOS and Windows.
+
+## Features
+
+**If you want to compute the location of cache, config or data directories for your own application or project,
+use `ProjectDirs` of the [directories](https://github.com/dirs-dev/directories-rs) project instead.**
+
+| Function name    | Value on Linux/Redox                                                   | Value on Windows                  | Value on macOS                              |
+| ---------------- | ---------------------------------------------------------------------- | --------------------------------- | ------------------------------------------- |
+| `home_dir`       | `Some($HOME)`                                                          | `Some({FOLDERID_Profile})`        | `Some($HOME)`                               |
+| `cache_dir`      | `Some($XDG_CACHE_HOME)`         or `Some($HOME`/.cache`)`              | `Some({FOLDERID_LocalAppData})`   | `Some($HOME`/Library/Caches`)`              |
+| `config_dir`     | `Some($XDG_CONFIG_HOME)`        or `Some($HOME`/.config`)`             | `Some({FOLDERID_RoamingAppData})` | `Some($HOME`/Library/Application Support`)` |
+| `data_dir`       | `Some($XDG_DATA_HOME)`          or `Some($HOME`/.local/share`)`        | `Some({FOLDERID_RoamingAppData})` | `Some($HOME`/Library/Application Support`)` |
+| `data_local_dir` | `Some($XDG_DATA_HOME)`          or `Some($HOME`/.local/share`)`        | `Some({FOLDERID_LocalAppData})`   | `Some($HOME`/Library/Application Support`)` |
+| `executable_dir` | `Some($XDG_BIN_HOME)`           or `Some($HOME`/.local/bin`)`          | `None`                            | `None`                                      |
+| `preference_dir` | `Some($XDG_CONFIG_HOME)`        or `Some($HOME`/.config`)`             | `Some({FOLDERID_RoamingAppData})` | `Some($HOME`/Library/Preferences`)`         |
+| `runtime_dir`    | `Some($XDG_RUNTIME_DIR)`        or `None`                              | `None`                            | `None`                                      |
+| `state_dir`      | `Some($XDG_STATE_HOME)`         or `Some($HOME`/.local/state`)`        | `None`                            | `None`                                      |
+| `audio_dir`      | `Some(XDG_MUSIC_DIR)`           or `None`                              | `Some({FOLDERID_Music})`          | `Some($HOME`/Music/`)`                      |
+| `desktop_dir`    | `Some(XDG_DESKTOP_DIR)`         or `None`                              | `Some({FOLDERID_Desktop})`        | `Some($HOME`/Desktop/`)`                    |
+| `document_dir`   | `Some(XDG_DOCUMENTS_DIR)`       or `None`                              | `Some({FOLDERID_Documents})`      | `Some($HOME`/Documents/`)`                  |
+| `download_dir`   | `Some(XDG_DOWNLOAD_DIR)`        or `None`                              | `Some({FOLDERID_Downloads})`      | `Some($HOME`/Downloads/`)`                  |
+| `font_dir`       | `Some($XDG_DATA_HOME`/fonts/`)` or `Some($HOME`/.local/share/fonts/`)` | `None`                            | `Some($HOME`/Library/Fonts/`)`              |
+| `picture_dir`    | `Some(XDG_PICTURES_DIR)`        or `None`                              | `Some({FOLDERID_Pictures})`       | `Some($HOME`/Pictures/`)`                   |
+| `public_dir`     | `Some(XDG_PUBLICSHARE_DIR)`     or `None`                              | `Some({FOLDERID_Public})`         | `Some($HOME`/Public/`)`                     |
+| `template_dir`   | `Some(XDG_TEMPLATES_DIR)`       or `None`                              | `Some({FOLDERID_Templates})`      | `None`                                      |
+| `video_dir`      | `Some(XDG_VIDEOS_DIR)`          or `None`                              | `Some({FOLDERID_Videos})`         | `Some($HOME`/Movies/`)`                     |
+
+## Comparison
+
+There are other crates in the Rust ecosystem that try similar or related things.
+Here is an overview of them, combined with ratings on properties that guided the design of this crate.
+
+Please take this table with a grain of salt: a different crate might very well be more suitable for your specific use case.
+(Of course _my_ crate achieves _my_ design goals better than other crates, which might have had different design goals.)
+
+| Library                                                   | Status         | Lin | Mac | Win |Base|User|Proj|Conv|
+| --------------------------------------------------------- | -------------- |:---:|:---:|:---:|:--:|:--:|:--:|:--:|
+| [app_dirs](https://crates.io/crates/app_dirs)             | Unmaintained   |  ✔  |  ✔  |  ✔  | 🞈  | ✖  | ✔  | ✖  |
+| [app_dirs2](https://crates.io/crates/app_dirs2)           | Maintained     |  ✔  |  ✔  |  ✔  | 🞈  | ✖  | ✔  | ✖  |
+| **dirs**                                                  | **Developed**  |  ✔  |  ✔  |  ✔  | ✔  | ✔  | ✖  | ✔  |
+| [directories](https://crates.io/crates/directories)       | Developed      |  ✔  |  ✔  |  ✔  | ✔  | ✔  | ✔  | ✔  |
+| [s_app_dir](https://crates.io/crates/s_app_dir)           | Unmaintained?  |  ✔  |  ✖  |  🞈  | ✖  | ✖  | 🞈  | ✖  |
+| [standard_paths](https://crates.io/crates/standard_paths) | Maintained     |  ✔  |  ✖  |  ✔  | ✔  | ✔  | ✔  | ✖  |
+| [xdg](https://crates.io/crates/xdg)                       | Maintained     |  ✔  |  ✖  |  ✖  | ✔  | ✖  | ✔  | 🞈  |
+| [xdg-basedir](https://crates.io/crates/xdg-basedir)       | Unmaintained?  |  ✔  |  ✖  |  ✖  | ✔   | ✖  | ✖  | 🞈  |
+| [xdg-rs](https://crates.io/crates/xdg-rs)                 | Obsolete       |  ✔  |  ✖  |  ✖  | ✔   | ✖  | ✖  | 🞈  |
+
+- Lin: Linux support
+- Mac: macOS support
+- Win: Windows support
+- Base: Supports [generic base directories](https://github.com/dirs-dev/directories-rs#basedirs)
+- User: Supports [user directories](https://github.com/dirs-dev/directories-rs#userdirs)
+- Proj: Supports [project-specific base directories](https://github.com/dirs-dev/directories-rs#projectdirs)
+- Conv: Follows naming conventions of the operating system it runs on
+
+## Build
+
+It's possible to cross-compile this library if the necessary toolchains are installed with rustup.
+This is helpful to ensure a change hasn't broken code on a different platform.
+
+The following commands will build this library on Linux, macOS and Windows:
+
+```
+cargo build --target=x86_64-unknown-linux-gnu
+cargo build --target=x86_64-pc-windows-gnu
+cargo build --target=x86_64-apple-darwin
+cargo build --target=x86_64-unknown-redox
+```
+
+## Changelog
+
+### 4
+
+- **BREAKING CHANGE** The behavior of `executable_dir` has been adjusted to not depend on `$XDG_DATA_HOME`.
+  Code, which assumed that setting the `$XDG_DATA_HOME` environment variable also impacted `executable_dir` if
+  the `$XDG_BIN_HOME` environment variable was not set, requires adjustment.
+- Add support for `XDG_STATE_HOME`.
+
+### 3
+
+- **BREAKING CHANGE** The behavior of `config_dir` on macOS has been adjusted
+  (thanks to [everyone involved](https://github.com/dirs-dev/directories-rs/issues/62)):
+  - The existing `config_dir` function has been changed to return the `Application Support`
+    directory on macOS, as suggested by Apple documentation.
+  - The behavior of the `config_dir` function on non-macOS platforms has not been changed.
+  - If you have used the `config_dir` function to store files, it may be necessary to write code
+    that migrates the files to the new location on macOS.<br/>
+    (Alternative: change uses of the `config_dir` function to uses of the `preference_dir` function
+    to retain the old behavior.)
+- The newly added `preference_dir` function returns the `Preferences` directory on macOS now,
+  which – according to Apple documentation – shall only be used to store .plist files using
+  Apple-proprietary APIs.
+  – `preference_dir` and `config_dir` behave identical on non-macOS platforms.
+
+### 2
+
+**BREAKING CHANGE** The behavior of deactivated, missing or invalid [_XDG User Dirs_](https://www.freedesktop.org/wiki/Software/xdg-user-dirs/)
+entries on Linux has been improved (contributed by @tmiasko, thank you!):
+
+- Version 1 returned the user's home directory (`Some($HOME)`) for such faulty entries, except for a faulty `XDG_DESKTOP_DIR` entry which returned (`Some($HOME/Desktop)`).
+- Version 2 returns `None` for such entries.
+
+## License
+
+Licensed under either of
+
+ * Apache License, Version 2.0
+   ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+ * MIT license
+   ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+
+at your option.
+
+## Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in the work by you, as defined in the Apache-2.0 license, shall be
+dual licensed as above, without any additional terms or conditions.
diff --git a/vendor/dirs/src/lib.rs b/vendor/dirs/src/lib.rs
new file mode 100644
index 000000000..3828b4fe7
--- /dev/null
+++ b/vendor/dirs/src/lib.rs
@@ -0,0 +1,316 @@
+//! The _dirs_ crate is
+//!
+//! - a tiny library with a minimal API (18 public functions)
+//! - that provides the platform-specific, user-accessible locations
+//! - for finding and storing configuration, cache and other data
+//! - on Linux, Redox, Windows (≥ Vista) and macOS.
+//!
+//! The library provides the location of these directories by leveraging the mechanisms defined by
+//!
+//! - the [XDG base directory](https://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html) and the [XDG user directory](https://www.freedesktop.org/wiki/Software/xdg-user-dirs/) specifications on Linux,
+//! - the [Known Folder](https://msdn.microsoft.com/en-us/library/windows/desktop/bb776911(v=vs.85).aspx) system on Windows, and
+//! - the [Standard Directories](https://developer.apple.com/library/content/documentation/FileManagement/Conceptual/FileSystemProgrammingGuide/FileSystemOverview/FileSystemOverview.html#//apple_ref/doc/uid/TP40010672-CH2-SW6) on macOS.
+
+#![deny(missing_docs)]
+
+use std::path::PathBuf;
+
+#[cfg(target_os = "windows")]
+mod win;
+#[cfg(target_os = "windows")]
+use win as sys;
+
+#[cfg(any(target_os = "macos", target_os = "ios"))]
+mod mac;
+#[cfg(any(target_os = "macos", target_os = "ios"))]
+use mac as sys;
+
+#[cfg(target_arch = "wasm32")]
+mod wasm;
+#[cfg(target_arch = "wasm32")]
+use wasm as sys;
+
+#[cfg(not(any(
+    target_os = "windows",
+    target_os = "macos", target_os = "ios",
+    target_arch = "wasm32"
+)))]
+mod lin;
+#[cfg(not(any(
+    target_os = "windows",
+    target_os = "macos", target_os = "ios",
+    target_arch = "wasm32"
+)))]
+use lin as sys;
+
+/// Returns the path to the user's home directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                | Example        |
+/// | ------- | -------------------- | -------------- |
+/// | Linux   | `$HOME`              | /home/alice    |
+/// | macOS   | `$HOME`              | /Users/Alice   |
+/// | Windows | `{FOLDERID_Profile}` | C:\Users\Alice |
+///
+/// ### Linux and macOS:
+///
+/// - Use `$HOME` if it is set and not empty.
+/// - If `$HOME` is not set or empty, then the function `getpwuid_r` is used to determine
+///   the home directory of the current user.
+/// - If `getpwuid_r` lacks an entry for the current user id or the home directory field is empty,
+///   then the function returns `None`.
+///
+/// ### Windows:
+///
+/// This function retrieves the user profile folder using `SHGetKnownFolderPath`.
+///
+/// All the examples on this page mentioning `$HOME` use this behavior.
+///
+/// _Note:_ This function's behavior differs from [`std::env::home_dir`],
+/// which works incorrectly on Linux, macOS and Windows.
+///
+/// [`std::env::home_dir`]: https://doc.rust-lang.org/std/env/fn.home_dir.html
+pub fn home_dir() -> Option<PathBuf> {
+    sys::home_dir()
+}
+/// Returns the path to the user's cache directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                               | Example                      |
+/// | ------- | ----------------------------------- | ---------------------------- |
+/// | Linux   | `$XDG_CACHE_HOME` or `$HOME`/.cache | /home/alice/.cache           |
+/// | macOS   | `$HOME`/Library/Caches              | /Users/Alice/Library/Caches  |
+/// | Windows | `{FOLDERID_LocalAppData}`           | C:\Users\Alice\AppData\Local |
+pub fn cache_dir() -> Option<PathBuf> {
+    sys::cache_dir()
+}
+/// Returns the path to the user's config directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                                 | Example                                  |
+/// | ------- | ------------------------------------- | ---------------------------------------- |
+/// | Linux   | `$XDG_CONFIG_HOME` or `$HOME`/.config | /home/alice/.config                      |
+/// | macOS   | `$HOME`/Library/Application Support   | /Users/Alice/Library/Application Support |
+/// | Windows | `{FOLDERID_RoamingAppData}`           | C:\Users\Alice\AppData\Roaming           |
+pub fn config_dir() -> Option<PathBuf> {
+    sys::config_dir()
+}
+/// Returns the path to the user's data directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                                    | Example                                  |
+/// | ------- | ---------------------------------------- | ---------------------------------------- |
+/// | Linux   | `$XDG_DATA_HOME` or `$HOME`/.local/share | /home/alice/.local/share                 |
+/// | macOS   | `$HOME`/Library/Application Support      | /Users/Alice/Library/Application Support |
+/// | Windows | `{FOLDERID_RoamingAppData}`              | C:\Users\Alice\AppData\Roaming           |
+pub fn data_dir() -> Option<PathBuf> {
+    sys::data_dir()
+}
+/// Returns the path to the user's local data directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                                    | Example                                  |
+/// | ------- | ---------------------------------------- | ---------------------------------------- |
+/// | Linux   | `$XDG_DATA_HOME` or `$HOME`/.local/share | /home/alice/.local/share                 |
+/// | macOS   | `$HOME`/Library/Application Support      | /Users/Alice/Library/Application Support |
+/// | Windows | `{FOLDERID_LocalAppData}`                | C:\Users\Alice\AppData\Local             |
+pub fn data_local_dir() -> Option<PathBuf> {
+    sys::data_local_dir()
+}
+/// Returns the path to the user's executable directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                                                            | Example                |
+/// | ------- | ---------------------------------------------------------------- | ---------------------- |
+/// | Linux   | `$XDG_BIN_HOME` or `$XDG_DATA_HOME`/../bin or `$HOME`/.local/bin | /home/alice/.local/bin |
+/// | macOS   | –                                                                | –                      |
+/// | Windows | –                                                                | –                      |
+pub fn executable_dir() -> Option<PathBuf> {
+    sys::executable_dir()
+}
+/// Returns the path to the user's preference directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                                 | Example                          |
+/// | ------- | ------------------------------------- | -------------------------------- |
+/// | Linux   | `$XDG_CONFIG_HOME` or `$HOME`/.config | /home/alice/.config              |
+/// | macOS   | `$HOME`/Library/Preferences           | /Users/Alice/Library/Preferences |
+/// | Windows | `{FOLDERID_RoamingAppData}`           | C:\Users\Alice\AppData\Roaming   |
+pub fn preference_dir() -> Option<PathBuf> {
+    sys::preference_dir()
+}
+/// Returns the path to the user's runtime directory.
+///
+/// The runtime directory contains transient, non-essential data (like sockets or named pipes) that
+/// is expected to be cleared when the user's session ends.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value              | Example         |
+/// | ------- | ------------------ | --------------- |
+/// | Linux   | `$XDG_RUNTIME_DIR` | /run/user/1001/ |
+/// | macOS   | –                  | –               |
+/// | Windows | –                  | –               |
+pub fn runtime_dir() -> Option<PathBuf> {
+    sys::runtime_dir()
+}
+/// Returns the path to the user's state directory.
+///
+/// The state directory contains data that should be retained between sessions (unlike the runtime
+/// directory), but may not be important/portable enough to be synchronized across machines (unlike
+/// the config/preferences/data directories).
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                                     | Example                  |
+/// | ------- | ----------------------------------------- | ------------------------ |
+/// | Linux   | `$XDG_STATE_HOME` or `$HOME`/.local/state | /home/alice/.local/state |
+/// | macOS   | –                                         | –                        |
+/// | Windows | –                                         | –                        |
+pub fn state_dir() -> Option<PathBuf> {
+    sys::state_dir()
+}
+
+/// Returns the path to the user's audio directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value              | Example              |
+/// | ------- | ------------------ | -------------------- |
+/// | Linux   | `XDG_MUSIC_DIR`    | /home/alice/Music    |
+/// | macOS   | `$HOME`/Music      | /Users/Alice/Music   |
+/// | Windows | `{FOLDERID_Music}` | C:\Users\Alice\Music |
+pub fn audio_dir() -> Option<PathBuf> {
+    sys::audio_dir()
+}
+/// Returns the path to the user's desktop directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                | Example                |
+/// | ------- | -------------------- | ---------------------- |
+/// | Linux   | `XDG_DESKTOP_DIR`    | /home/alice/Desktop    |
+/// | macOS   | `$HOME`/Desktop      | /Users/Alice/Desktop   |
+/// | Windows | `{FOLDERID_Desktop}` | C:\Users\Alice\Desktop |
+pub fn desktop_dir() -> Option<PathBuf> {
+    sys::desktop_dir()
+}
+/// Returns the path to the user's document directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                  | Example                  |
+/// | ------- | ---------------------- | ------------------------ |
+/// | Linux   | `XDG_DOCUMENTS_DIR`    | /home/alice/Documents    |
+/// | macOS   | `$HOME`/Documents      | /Users/Alice/Documents   |
+/// | Windows | `{FOLDERID_Documents}` | C:\Users\Alice\Documents |
+pub fn document_dir() -> Option<PathBuf> {
+    sys::document_dir()
+}
+/// Returns the path to the user's download directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                  | Example                  |
+/// | ------- | ---------------------- | ------------------------ |
+/// | Linux   | `XDG_DOWNLOAD_DIR`     | /home/alice/Downloads    |
+/// | macOS   | `$HOME`/Downloads      | /Users/Alice/Downloads   |
+/// | Windows | `{FOLDERID_Downloads}` | C:\Users\Alice\Downloads |
+pub fn download_dir() -> Option<PathBuf> {
+    sys::download_dir()
+}
+/// Returns the path to the user's font directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                                                | Example                        |
+/// | ------- | ---------------------------------------------------- | ------------------------------ |
+/// | Linux   | `$XDG_DATA_HOME`/fonts or `$HOME`/.local/share/fonts | /home/alice/.local/share/fonts |
+/// | macOS   | `$HOME/Library/Fonts`                                | /Users/Alice/Library/Fonts     |
+/// | Windows | –                                                    | –                              |
+pub fn font_dir() -> Option<PathBuf> {
+    sys::font_dir()
+}
+/// Returns the path to the user's picture directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                 | Example                 |
+/// | ------- | --------------------- | ----------------------- |
+/// | Linux   | `XDG_PICTURES_DIR`    | /home/alice/Pictures    |
+/// | macOS   | `$HOME`/Pictures      | /Users/Alice/Pictures   |
+/// | Windows | `{FOLDERID_Pictures}` | C:\Users\Alice\Pictures |
+pub fn picture_dir() -> Option<PathBuf> {
+    sys::picture_dir()
+}
+/// Returns the path to the user's public directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                 | Example             |
+/// | ------- | --------------------- | ------------------- |
+/// | Linux   | `XDG_PUBLICSHARE_DIR` | /home/alice/Public  |
+/// | macOS   | `$HOME`/Public        | /Users/Alice/Public |
+/// | Windows | `{FOLDERID_Public}`   | C:\Users\Public     |
+pub fn public_dir() -> Option<PathBuf> {
+    sys::public_dir()
+}
+/// Returns the path to the user's template directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value                  | Example                                                    |
+/// | ------- | ---------------------- | ---------------------------------------------------------- |
+/// | Linux   | `XDG_TEMPLATES_DIR`    | /home/alice/Templates                                      |
+/// | macOS   | –                      | –                                                          |
+/// | Windows | `{FOLDERID_Templates}` | C:\Users\Alice\AppData\Roaming\Microsoft\Windows\Templates |
+pub fn template_dir() -> Option<PathBuf> {
+    sys::template_dir()
+}
+
+/// Returns the path to the user's video directory.
+///
+/// The returned value depends on the operating system and is either a `Some`, containing a value from the following table, or a `None`.
+///
+/// |Platform | Value               | Example               |
+/// | ------- | ------------------- | --------------------- |
+/// | Linux   | `XDG_VIDEOS_DIR`    | /home/alice/Videos    |
+/// | macOS   | `$HOME`/Movies      | /Users/Alice/Movies   |
+/// | Windows | `{FOLDERID_Videos}` | C:\Users\Alice\Videos |
+pub fn video_dir() -> Option<PathBuf> {
+    sys::video_dir()
+}
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn test_dirs() {
+        println!("home_dir:       {:?}", ::home_dir());
+        println!();
+        println!("cache_dir:      {:?}", ::cache_dir());
+        println!("config_dir:     {:?}", ::config_dir());
+        println!("data_dir:       {:?}", ::data_dir());
+        println!("data_local_dir: {:?}", ::data_local_dir());
+        println!("executable_dir: {:?}", ::executable_dir());
+        println!("preference_dir: {:?}", ::preference_dir());
+        println!("runtime_dir:    {:?}", ::runtime_dir());
+        println!("state_dir:      {:?}", ::state_dir());
+        println!();
+        println!("audio_dir:      {:?}", ::audio_dir());
+        println!("desktop_dir:    {:?}", ::desktop_dir());
+        println!("cache_dir:      {:?}", ::document_dir());
+        println!("config_dir:     {:?}", ::download_dir());
+        println!("font_dir:       {:?}", ::font_dir());
+        println!("picture_dir:    {:?}", ::picture_dir());
+        println!("public_dir:     {:?}", ::public_dir());
+        println!("template_dir:   {:?}", ::template_dir());
+        println!("video_dir:      {:?}", ::video_dir());
+    }
+}
diff --git a/vendor/dirs/src/lin.rs b/vendor/dirs/src/lin.rs
new file mode 100644
index 000000000..fb4fbd9b5
--- /dev/null
+++ b/vendor/dirs/src/lin.rs
@@ -0,0 +1,34 @@
+extern crate dirs_sys;
+
+use std::env;
+use std::path::PathBuf;
+
+pub fn home_dir()       -> Option<PathBuf> { dirs_sys::home_dir() }
+
+pub fn cache_dir()      -> Option<PathBuf> { env::var_os("XDG_CACHE_HOME") .and_then(dirs_sys::is_absolute_path).or_else(|| home_dir().map(|h| h.join(".cache"))) }
+pub fn config_dir()     -> Option<PathBuf> { env::var_os("XDG_CONFIG_HOME").and_then(dirs_sys::is_absolute_path).or_else(|| home_dir().map(|h| h.join(".config"))) }
+pub fn data_dir()       -> Option<PathBuf> { env::var_os("XDG_DATA_HOME")  .and_then(dirs_sys::is_absolute_path).or_else(|| home_dir().map(|h| h.join(".local/share"))) }
+pub fn data_local_dir() -> Option<PathBuf> { data_dir() }
+pub fn preference_dir() -> Option<PathBuf> { config_dir() }
+pub fn runtime_dir()    -> Option<PathBuf> { env::var_os("XDG_RUNTIME_DIR").and_then(dirs_sys::is_absolute_path) }
+pub fn state_dir()      -> Option<PathBuf> { env::var_os("XDG_STATE_HOME") .and_then(dirs_sys::is_absolute_path).or_else(|| home_dir().map(|h| h.join(".local/state"))) }
+pub fn executable_dir() -> Option<PathBuf> { env::var_os("XDG_BIN_HOME")   .and_then(dirs_sys::is_absolute_path).or_else(|| home_dir().map(|h| h.join(".local/bin"))) }
+
+pub fn audio_dir()      -> Option<PathBuf> { dirs_sys::user_dir("MUSIC") }
+pub fn desktop_dir()    -> Option<PathBuf> { dirs_sys::user_dir("DESKTOP") }
+pub fn document_dir()   -> Option<PathBuf> { dirs_sys::user_dir("DOCUMENTS") }
+pub fn download_dir()   -> Option<PathBuf> { dirs_sys::user_dir("DOWNLOAD") }
+pub fn font_dir()       -> Option<PathBuf> { data_dir().map(|d| d.join("fonts")) }
+pub fn picture_dir()    -> Option<PathBuf> { dirs_sys::user_dir("PICTURES") }
+pub fn public_dir()     -> Option<PathBuf> { dirs_sys::user_dir("PUBLICSHARE") }
+pub fn template_dir()   -> Option<PathBuf> { dirs_sys::user_dir("TEMPLATES") }
+pub fn video_dir()      -> Option<PathBuf> { dirs_sys::user_dir("VIDEOS") }
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn test_file_user_dirs_exists() {
+        let user_dirs_file = ::config_dir().unwrap().join("user-dirs.dirs");
+        println!("{:?} exists: {:?}", user_dirs_file, user_dirs_file.exists());
+    }
+}
diff --git a/vendor/dirs/src/mac.rs b/vendor/dirs/src/mac.rs
new file mode 100644
index 000000000..3d8274ecc
--- /dev/null
+++ b/vendor/dirs/src/mac.rs
@@ -0,0 +1,24 @@
+extern crate dirs_sys;
+
+use std::path::PathBuf;
+
+pub fn home_dir()       -> Option<PathBuf> { dirs_sys::home_dir() }
+
+pub fn cache_dir()      -> Option<PathBuf> { home_dir().map(|h| h.join("Library/Caches")) }
+pub fn config_dir()     -> Option<PathBuf> { home_dir().map(|h| h.join("Library/Application Support")) }
+pub fn data_dir()       -> Option<PathBuf> { home_dir().map(|h| h.join("Library/Application Support")) }
+pub fn data_local_dir() -> Option<PathBuf> { data_dir() }
+pub fn preference_dir() -> Option<PathBuf> { home_dir().map(|h| h.join("Library/Preferences")) }
+pub fn executable_dir() -> Option<PathBuf> { None }
+pub fn runtime_dir()    -> Option<PathBuf> { None }
+pub fn state_dir()      -> Option<PathBuf> { None }
+
+pub fn audio_dir()      -> Option<PathBuf> { home_dir().map(|h| h.join("Music")) }
+pub fn desktop_dir()    -> Option<PathBuf> { home_dir().map(|h| h.join("Desktop")) }
+pub fn document_dir()   -> Option<PathBuf> { home_dir().map(|h| h.join("Documents")) }
+pub fn download_dir()   -> Option<PathBuf> { home_dir().map(|h| h.join("Downloads")) }
+pub fn font_dir()       -> Option<PathBuf> { home_dir().map(|h| h.join("Library/Fonts")) }
+pub fn picture_dir()    -> Option<PathBuf> { home_dir().map(|h| h.join("Pictures")) }
+pub fn public_dir()     -> Option<PathBuf> { home_dir().map(|h| h.join("Public")) }
+pub fn template_dir()   -> Option<PathBuf> { None }
+pub fn video_dir()      -> Option<PathBuf> { home_dir().map(|h| h.join("Movies")) }
diff --git a/vendor/dirs/src/wasm.rs b/vendor/dirs/src/wasm.rs
new file mode 100644
index 000000000..b4a8dd2fb
--- /dev/null
+++ b/vendor/dirs/src/wasm.rs
@@ -0,0 +1,24 @@
+// Stub definitions to make things *compile*.
+
+use std::path::PathBuf;
+
+pub fn home_dir()       -> Option<PathBuf> { None }
+
+pub fn cache_dir()      -> Option<PathBuf> { None }
+pub fn config_dir()     -> Option<PathBuf> { None }
+pub fn data_dir()       -> Option<PathBuf> { None }
+pub fn data_local_dir() -> Option<PathBuf> { None }
+pub fn preference_dir() -> Option<PathBuf> { None }
+pub fn runtime_dir()    -> Option<PathBuf> { None }
+pub fn executable_dir() -> Option<PathBuf> { None }
+pub fn state_dir()      -> Option<PathBuf> { None }
+
+pub fn audio_dir()      -> Option<PathBuf> { None }
+pub fn desktop_dir()    -> Option<PathBuf> { None }
+pub fn document_dir()   -> Option<PathBuf> { None }
+pub fn download_dir()   -> Option<PathBuf> { None }
+pub fn font_dir()       -> Option<PathBuf> { None }
+pub fn picture_dir()    -> Option<PathBuf> { None }
+pub fn public_dir()     -> Option<PathBuf> { None }
+pub fn template_dir()   -> Option<PathBuf> { None }
+pub fn video_dir()      -> Option<PathBuf> { None }
diff --git a/vendor/dirs/src/win.rs b/vendor/dirs/src/win.rs
new file mode 100644
index 000000000..f28693c01
--- /dev/null
+++ b/vendor/dirs/src/win.rs
@@ -0,0 +1,24 @@
+extern crate dirs_sys;
+
+use std::path::PathBuf;
+
+pub fn home_dir()       -> Option<PathBuf> { dirs_sys::known_folder_profile() }
+
+pub fn data_dir()       -> Option<PathBuf> { dirs_sys::known_folder_roaming_app_data() }
+pub fn data_local_dir() -> Option<PathBuf> { dirs_sys::known_folder_local_app_data() }
+pub fn cache_dir()      -> Option<PathBuf> { data_local_dir() }
+pub fn config_dir()     -> Option<PathBuf> { data_dir() }
+pub fn executable_dir() -> Option<PathBuf> { None }
+pub fn preference_dir() -> Option<PathBuf> { data_dir() }
+pub fn runtime_dir()    -> Option<PathBuf> { None }
+pub fn state_dir()      -> Option<PathBuf> { None }
+
+pub fn audio_dir()      -> Option<PathBuf> { dirs_sys::known_folder_music() }
+pub fn desktop_dir()    -> Option<PathBuf> { dirs_sys::known_folder_desktop() }
+pub fn document_dir()   -> Option<PathBuf> { dirs_sys::known_folder_documents() }
+pub fn download_dir()   -> Option<PathBuf> { dirs_sys::known_folder_downloads() }
+pub fn font_dir()       -> Option<PathBuf> { None }
+pub fn picture_dir()    -> Option<PathBuf> { dirs_sys::known_folder_pictures() }
+pub fn public_dir()     -> Option<PathBuf> { dirs_sys::known_folder_public()}
+pub fn template_dir()   -> Option<PathBuf> { dirs_sys::known_folder_templates() }
+pub fn video_dir()      -> Option<PathBuf> { dirs_sys::known_folder_videos() }