update CHANGELOG.md

Author: zookzook

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   * fix a crash in the streaming hello monitor, if the server sends more than one response at once 
   * add support for the new hello handshake
   * refactor :timeout option (thanks to JD-Robertson for reporting)
+  * add timestamps macro to the collection module to handle inserted_at and updated_at attributes (thanks to carlosliracl) 
 
 ## 0.9.1 (2022-05-27)
 * Bugfix