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+semver
+======
+
+[<img alt="github" src="https://img.shields.io/badge/github-dtolnay/semver-8da0cb?style=for-the-badge&labelColor=555555&logo=github" height="20">](https://github.com/dtolnay/semver)
+[<img alt="crates.io" src="https://img.shields.io/crates/v/semver.svg?style=for-the-badge&color=fc8d62&logo=rust" height="20">](https://crates.io/crates/semver)
+[<img alt="docs.rs" src="https://img.shields.io/badge/docs.rs-semver-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs" height="20">](https://docs.rs/semver)
+[<img alt="build status" src="https://img.shields.io/github/actions/workflow/status/dtolnay/semver/ci.yml?branch=master&style=for-the-badge" height="20">](https://github.com/dtolnay/semver/actions?query=branch%3Amaster)
+
+A parser and evaluator for Cargo's flavor of Semantic Versioning.
+
+Semantic Versioning (see <https://semver.org>) is a guideline for how version
+numbers are assigned and incremented. It is widely followed within the
+Cargo/crates.io ecosystem for Rust.
+
+```toml
+[dependencies]
+semver = "1.0"
+```
+
+*Compiler support: requires rustc 1.31+*
+
+<br>
+
+## Example
+
+```rust
+use semver::{BuildMetadata, Prerelease, Version, VersionReq};
+
+fn main() {
+    let req = VersionReq::parse(">=1.2.3, <1.8.0").unwrap();
+
+    // Check whether this requirement matches version 1.2.3-alpha.1 (no)
+    let version = Version {
+        major: 1,
+        minor: 2,
+        patch: 3,
+        pre: Prerelease::new("alpha.1").unwrap(),
+        build: BuildMetadata::EMPTY,
+    };
+    assert!(!req.matches(&version));
+
+    // Check whether it matches 1.3.0 (yes it does)
+    let version = Version::parse("1.3.0").unwrap();
+    assert!(req.matches(&version));
+}
+```
+
+<br>
+
+## Scope of this crate
+
+Besides Cargo, several other package ecosystems and package managers for other
+languages also use SemVer:&ensp;RubyGems/Bundler for Ruby, npm for JavaScript,
+Composer for PHP, CocoaPods for Objective-C...
+
+The `semver` crate is specifically intended to implement Cargo's interpretation
+of Semantic Versioning.
+
+Where the various tools differ in their interpretation or implementation of the
+spec, this crate follows the implementation choices made by Cargo. If you are
+operating on version numbers from some other package ecosystem, you will want to
+use a different semver library which is appropriate to that ecosystem.
+
+The extent of Cargo's SemVer support is documented in the *[Specifying
+Dependencies]* chapter of the Cargo reference.
+
+[Specifying Dependencies]: https://doc.rust-lang.org/cargo/reference/specifying-dependencies.html
+
+<br>
+
+#### License
+
+<sup>
+Licensed under either of <a href="LICENSE-APACHE">Apache License, Version
+2.0</a> or <a href="LICENSE-MIT">MIT license</a> at your option.
+</sup>
+
+<br>
+
+<sub>
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in this crate by you, as defined in the Apache-2.0 license, shall
+be dual licensed as above, without any additional terms or conditions.
+</sub>