doc : CHANGELOG updated

Author: sepandhaghighi

CHANGELOG.md

@@ -5,7 +5,7 @@ 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).
 
 ## [Unreleased]
-## [0.45] - 2020-12-25
+## [0.45] - 2020-12-26
 ### Added
 - `__main__.py`
 - `__version__` variable