Update changelog

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to [ChaiLove](https://github.com/RobLoach/ChaiLove) will be
 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] - xxxx-xx-xx
+### Changed
+- Replaced ChaiScript_Extras fork
+
 ## 0.10.0 - 2017-11-30
 ### Added
 - Mac support