CHANGELOG.md in dartsclone-0.2.1 vs CHANGELOG.md in dartsclone-0.2.2

@@ -1,4 +1,7 @@
+## 0.2.2
+- Refactor native extension codes considering garbage collection.
+
 ## 0.2.1
 - Replace Data_ functions to TypedData_ functions.
 - Fix some config files.
 
 ## 0.2.0