Add a changelog

Author: david-sawatzke

CHANGELOG.md

@@ -0,0 +1,30 @@
+# 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).
+
+## [Unreleased]
+### Added
+- Some basic documentation
+- Add some common impls to `White`, making it easier to use
+
+## [0.2.0] - 2019-05-01
+### Added
+- Add an `RGBW` alias and a `White` type
+### Changed
+- Make the `SmartLedsWrite` color parameter generic, to support e.g. RGBW leds
+
+## [0.1.1] - 2019-03-24
+### Changed
+- Use rgb type from the `rgb` crate
+
+## [0.1.0] - 2019-03-05
+### Added
+- Initial release
+
+
+[Unreleased]: https://github.com/smart-leds-rs/smart-leds-trait/compare/v0.2.0...HEAD
+[0.2.0]: https://github.com/smart-leds-rs/smart-leds-trait/compare/v0.1.1...v0.2.0
+[0.1.1]: https://github.com/smart-leds-rs/smart-leds-trait/compare/v0.1.0...v0.1.1
+[0.1.0]: https://github.com/smart-leds-rs/smart-leds-trait/releases/tag/v0.1.0