(#7) Update CHANGELOG.md and add v0.2.0

Author: LaksCastro

CHANGELOG.md

@@ -1,3 +1,10 @@
+## 0.2.0
+
+Add basic support for `Storage Access Framework` and `targetSdk 31`
+
+- The package now supports basic intents from `Storage Access Framework`
+- Your App needs update the `build.gradle` by targeting the current sdk to `31`
+
 ## 0.1.1
 
 Minor improvements on `pub.dev` documentation