Update CHANGELOG.md

Author: scott-xu

CHANGELOG.md

@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [3.3.3] - 2017-10-22
+
+### Fixed
+- Removed debug code.
+
 ## [3.3.2] - 2017-10-22
 
 ### Added