Update changelog

CHANGELOG.md

@@ -4,6 +4,13 @@ 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).
 
+## [2.50] - 2019-08-10
+ 
+ - Update i18n files to include contact form #185
+ - Fix min_version #189
+ - Remove deprecated meta tags for old Windows Mobile and BlackBerry #191
+
+
 ## [2.37] - 2018-12-26 (@budparr)
 
 - Improve Readme with path to example site #146