Add missing changelog for vscode extension
All notable changes to the "solang" extension will be documented in this file.
-Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how to structure this file.
+## [0.2.0]
-## [Unreleased]
+- Automatically download a newer version of solang if available
+- Use the arm mac binary if running on apple silicon
+
+## [0.1.0]
- Initial release
\ No newline at end of file
