Updated changelog

Author: marickvantuil

CHANGELOG.md

@@ -4,6 +4,12 @@ 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).
 
+## 4.0.2 - 2019-01-01
+
+**Fixed**
+
+- Fixed regression bug (testing mode)
+
 ## 4.0.1 - 2018-12-31
 
 **Added**