set release date for 0.4 to tomorrow

Author: bernhardmgruber

CHANGELOG.md

@@ -4,7 +4,7 @@ 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/).
 
 
-## [0.4] - 2022-01-XX
+## [0.4] - 2022-01-25
 
 ### Added features
 - added `operator<<` for `llama::VirtualRecord`, `llama::RecordCoord`, `llama::Array` and `llama::ArrayExtents` #279, #243, #373, #374