chore: checkpoint before Python removal

vendor/anstyle-wincon/README.md

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+# anstyle-wincon
+
+> Styling legacy Windows terminals
+
+[![Documentation](https://img.shields.io/badge/docs-master-blue.svg)][Documentation]
+![License](https://img.shields.io/crates/l/anstyle-wincon.svg)
+[![Crates Status](https://img.shields.io/crates/v/anstyle-wincon.svg)](https://crates.io/crates/anstyle-wincon)
+
+## License
+
+Licensed under either of
+
+* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or <https://www.apache.org/licenses/LICENSE-2.0>)
+* MIT license ([LICENSE-MIT](LICENSE-MIT) or <https://opensource.org/license/mit>)
+
+at your option.
+
+## [Contribute](../../CONTRIBUTING.md)
+
+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.
+
+### Special Thanks
+
+[burntsushi](https://github.com/burntsushi) for [termcolor](https://github.com/burntsushi/termcolor) as I don't know Windows either :)
+
+[Crates.io]: https://crates.io/crates/anstyle-wincon
+[Documentation]: https://docs.rs/anstyle-wincon