Update changelog

Author: Jean85

CHANGELOG.md

@@ -5,6 +5,8 @@ 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]
+### Added
+ - Add config for autowiring the client (#158, thanks @gander)
 
 ## 2.0.3 - 2018-06-01
 ### Added