Update changelog

Author: Jean85

CHANGELOG.md

@@ -5,6 +5,10 @@ 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).
 ## Unreleased
 
+## 0.1.1 [2019-03-13]
+### Added
+ * Add a third string optional parameter to `WebTestCase::assertStatusCode` as a custom failure message 
+
 ## 0.1 [2019-03-08]
 First release.