Merge branch 'hotfix_v1.2.3' into development

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/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## 1.2.3 - 2018-06-14
+### Changed
+- Fixed roundig error in classroom count route
+- Route performance improved
+
 ## 1.2.2 - 2018-05-22
 ### Changed
 - Fixed bug with missing education levels in classroom count