3.x and changelog

CHANGELOG.md

@@ -2,12 +2,12 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
-## [Unreleased]
+## [3.x]
 ### Added
 
 ### Changed
 - Updated AdminLTE theme to version 2.3.3
- 
+
 ### Deprecated
 - Deprecated BaseFieldDescription::camelize()
 - Deprecated AdminHelper::camelize()