Update changelog with #297

Author: jbrown215

CHANGELOG.md

@@ -5,6 +5,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [0.7.0] 2019-12-11
+## Added
+- Added jest snapshot utils (#297, @dogoku)
+
 ### Changed
 - Moved from BSD to MIT license