Update CHANGELOG.md

Author: kamyar

CHANGELOG.md

@@ -4,6 +4,11 @@ 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).
 
+## 1.4.0
+
+### Added
+- `calendarFocus` prop: Whether calendar focus month should be forward-driven or backwards-driven. can be `forwards` or `backwards` (Default: `forwards`)
+- `preventSnapRefocus` prop: prevents unneceessary refocus of shown range on selection. (Default: `false`)
 
 ## 1.3.0