Update changelog

Author: XedinUnknown

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [[*next-version*]] - YYYY-MM-DD
+### Fixed
+- Maintenance: update tool configs, modernize Docker.
 
 ## [0.1.1-alpha1] - 2021-06-10
 ### Added