docs: update CHANGELOG

CHANGELOG.md

@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - The duration is now in seconds and is stored as a float.
 - The job-timeout for the importer is now three minutes for Docker.
 - Show uploads are stored in folders named after the ids instead of the slugs. (tank#37)
+- error and info log files now have timestamps (tank#68)
 
 ### Deprecated