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

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

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+minimal-lexical
+===============
+
+This is a minimal version of [rust-lexical](https://github.com/Alexhuszagh/rust-lexical), meant to allow efficient round-trip float parsing. minimal-lexical implements a correct, fast float parser.
+
+Due to the small, stable nature of minimal-lexical, it is also well-adapted to private forks. If you do privately fork minimal-lexical, I recommend you contact me via [email](mailto:ahuszagh@gmail.com) or [Twitter](https://twitter.com/KardOnIce), so I can notify you of feature updates, bug fixes, or security vulnerabilities, as well as help you implement custom feature requests. I will not use your information for any other purpose, including, but not limited to disclosing your project or organization's use of minimal-lexical.
+
+minimal-lexical is designed for fast compile times and small binaries sizes, at the expense of a minor amount of performance. For improved performance, feel free to fork minimal-lexical with more aggressive inlining.
+
+**Similar Projects**
+
+For a high-level, all-in-one number conversion routines, see [rust-lexical](https://github.com/Alexhuszagh/rust-lexical).
+
+**Table Of Contents**
+
+- [Getting Started](#getting-started)
+- [Recipes](#recipes)
+- [Algorithms](#algorithms)
+- [Platform Support](platform-support)
+- [Minimum Version Support](minimum-version-support)
+- [Changelog](#changelog)
+- [License](#license)
+- [Contributing](#contributing)
+
+# Getting Started
+
+First, add the following to your `Cargo.toml`.
+
+```toml
+[dependencies]
+minimal-lexical = "0.2"
+```
+
+Next, to parse a simple float, use the following:
+
+```rust
+extern crate minimal_lexical;
+
+// Let's say we want to parse "1.2345".
+// First, we need an external parser to extract the integer digits ("1"),
+// the fraction digits ("2345"), and then parse the exponent to a 32-bit
+// integer (0). 
+// Warning:
+// --------
+//  Please note that leading zeros must be trimmed from the integer,
+//  and trailing zeros must be trimmed from the fraction. This cannot
+//  be handled by minimal-lexical, since we accept iterators
+let integer = b"1";
+let fraction = b"2345";
+let float: f64 = minimal_lexical::parse_float(integer.iter(), fraction.iter(), 0);
+println!("float={:?}", float);    // 1.235
+```
+
+# Recipes
+
+You may be asking: where is the actual parser? Due to variation in float formats, and the goal of integrating utility for various data-interchange language parsers, such functionality would be beyond the scope of this library.
+
+For example, the following float is valid in Rust strings, but is invalid in JSON or TOML:
+```json
+1.e7
+```
+
+Therefore, to use the library, you need functionality that extracts the significant digits to pass to `create_float`. Please see [simple-example](https://github.com/Alexhuszagh/minimal-lexical/blob/master/examples/simple.rs) for a simple, annotated example on how to use minimal-lexical as a parser.
+
+# Algorithms
+
+For an in-depth explanation on the algorithms minimal-lexical uses, please see [lexical-core#string-to-float](https://github.com/Alexhuszagh/rust-lexical/tree/master/lexical-core#string-to-float).
+
+# Platform Support
+
+minimal-lexical is tested on a wide variety of platforms, including big and small-endian systems, to ensure portable code. Supported architectures include:
+- x86_64 Linux, Windows, macOS, Android, iOS, FreeBSD, and NetBSD.
+- x86 Linux, macOS, Android, iOS, and FreeBSD.
+- aarch64 (ARM8v8-A) Linux, Android, and iOS.
+- armv7 (ARMv7-A) Linux, Android, and iOS.
+- arm (ARMv6) Linux, and Android.
+- mips (MIPS) Linux.
+- mipsel (MIPS LE) Linux.
+- mips64 (MIPS64 BE) Linux.
+- mips64el (MIPS64 LE) Linux.
+- powerpc (PowerPC) Linux.
+- powerpc64 (PPC64) Linux.
+- powerpc64le (PPC64LE) Linux.
+- s390x (IBM Z) Linux.
+
+minimal-lexical should also work on a wide variety of other architectures and ISAs. If you have any issue compiling minimal-lexical on any architecture, please file a bug report.
+
+# Minimum Version Support
+
+Minimal-lexical is tested to support Rustc 1.36+, including stable, beta, and nightly. Please report any errors compiling a supported lexical version on a compatible Rustc version. Please note we may increment the MSRV for compiler versions older than 18 months, to support at least the current Debian stable version, without breaking changes.
+
+# Changelog
+
+All changes are documented in [CHANGELOG](CHANGELOG).
+
+# License
+
+Minimal-lexical is dual licensed under the Apache 2.0 license as well as the MIT license. See the [LICENSE.md](LICENSE.md) file for full license details.
+
+# Contributing
+
+Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in minimal-lexical by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.