changelog: prepare for version bump

CHANGELOG.md

@@ -8,7 +8,7 @@ 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).
 
-## 2.0.0a5 - Unreleased
+## [2.0.0a5] - 2022-10-28
 
 ### Added
 
@@ -548,6 +548,7 @@ Same as in 0.1.1
 - `flpinfo` doesn't output correctly sometimes due to long strings.
 - Extraneous data dumped sometimes by `InsertSlotEvent.Plugin`, why this is caused is not known.
 
+[2.0.0a5]: https://github.com/demberto/PyFLP/compare/v2.0.0a4...v2.0.0a5
 [2.0.0a4]: https://github.com/demberto/PyFLP/compare/v2.0.0a3...v2.0.0a4
 [2.0.0a3]: https://github.com/demberto/PyFLP/compare/v2.0.0a2...v2.0.0a3
 [2.0.0a2]: https://github.com/demberto/PyFLP/compare/v2.0.0a1...v2.0.0a2