Update changelog for 0.2.0 release

Author: schmengler

CHANGELOG.md

@@ -4,7 +4,14 @@ 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).
 
-## [Unreleased]
+## 0.2.0 - 2018-10-05
+
+### Added
+- Filter module list by core & custom modules ([#6](https://github.com/magento-hackathon/DevDashboard2/issues/6))
+- Show missing php extensions ([#11](https://github.com/magento-hackathon/DevDashboard2/issues/11))
+
+### Fixed
+- Error when creating new admin user ([#20](https://github.com/magento-hackathon/DevDashboard2/issues/20))
 
 ## 0.1.0 - 2018-03-11
 ### Added