Update CHANGELOG.md

Added more versions

CHANGELOG.md

@@ -5,11 +5,26 @@ 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]
-### [2.19.3] - 2018-xx-xx
+### [2.20.3] - 2018-xx-xx
+- See https://github.com/nextcloud/ios/milestone/24
+
+## [2.20.2] - 2018-02-18
+### Changed
+- No information available
+
+## [2.20.1] - 2018-02-15
+### Changed
+- See https://github.com/nextcloud/ios/milestone/23
+
+## [2.20.0] - 2018-02-09
+### Changed
+- See https://github.com/nextcloud/ios/milestone/22
+
+## [2.19.3] - 2018-02-06
+### Changed
 - See https://github.com/nextcloud/ios/milestone/21
 
-## [2.19.2] - 2018-02-06
-- See https://github.com/nextcloud/ios/milestone/20
+## [2.19.2] - 2018-02-03
 ### Fixed
 - Icons and labels overlap on iPad Pro. See [Details](https://github.com/nextcloud/ios/issues/476)
 - Not showing correct data usage. See [Details](https://github.com/nextcloud/ios/issues/451)
@@ -17,6 +32,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Changed
 - Replace icon for shared folders. See See [Details](https://github.com/nextcloud/ios/issues/458)
+- See https://github.com/nextcloud/ios/milestone/20
 
 ## [2.19.1] - 2017-12-22
 ### Fixed