Changed: Update CHANGELOG

Author: kayjan

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 ### Added
 - Misc: Documentation plugin Termynal for code animation.
+- Misc: Usage of `docstr-coverage`.
+- Misc: Docstrings for nested functions to pass `docstr-coverage`.
 ### Changed
 - Misc: Documentation CSS for h1 display for windows compatibility, modify the related links on main page.