Update changelog

Author: moorscode

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [1.0.2]
+### Fixed
+* When multiple plugins containing whip are activated, the message is no longer shown multiple times.
+
 ## [1.0.1]
 ### Fixed
 * Fix a missing link when the PHP message is switched to the WordPress.org hosting page.