Update CHANGELOG.md

Author: matkoch

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [vNext]
+- Fixed checking hashes for non-existing configuration files
+- Fixed null-reference exception for commands without message
 
 ## [0.23.0] / 2019-10-31
 - Changed target frameworks to `netcoreapp3.0` and `net472`