Merge pull request #3 from SteMazzO/SteMazzO-patch-2

chore: Update CHANGELOG.md

Author: SteMazzO

CHANGELOG.md

@@ -5,7 +5,9 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [Unreleases]
+
+## [0.4.0]
 
 ### Added