Add section for 0.2.1

Author: Aiqiao Yan

packages/cache/RELEASES.md

@@ -4,5 +4,8 @@
 
 - Initial release
 
+### 0.2.0
+- Fixes issues with the zstd compression algorithm on Windows and Ubuntu 16.04 [#469](https://github.com/actions/toolkit/pull/469)
+
 ### 0.2.1
-- Fixes issues with the zstd compression algorithm on Windows and Ubuntu 16.04 [#469](https://github.com/actions/toolkit/pull/469)
+- Fix to await async function getCompressionMethod