prepare 0.28.0 release

CHANGELOG.md

@@ -3,6 +3,9 @@
 All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
+- No unreleased changes so far
+
+## [0.28.0] - 2021-12-20
 ### Added
 - decoding of capability status
 - new charge modes
@@ -397,7 +400,8 @@ Minor fix in observer interface
 ## [0.1.0] - 2021-05-26
 Initial release
 
-[unreleased]: https://github.com/tillsteinbach/WeConnect-python/compare/v0.27.2...HEAD
+[unreleased]: https://github.com/tillsteinbach/WeConnect-python/compare/v0.28.0...HEAD
+[0.28.0]: https://github.com/tillsteinbach/WeConnect-python/releases/tag/v0.28.0
 [0.27.2]: https://github.com/tillsteinbach/WeConnect-python/releases/tag/v0.27.2
 [0.27.1]: https://github.com/tillsteinbach/WeConnect-python/releases/tag/v0.27.1
 [0.27.0]: https://github.com/tillsteinbach/WeConnect-python/releases/tag/v0.27.0