Update Changelog version

Author: wilsonge

CHANGELOG.md

@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+
+## 0.2.0
 - Refactor of the tabs element
   - Logic rewritten so the tabs won't be reappended (no more moving elements)
   - Added `breakpoint` attribute for controling the transition from tabs/accordion