v2.21 changelog

Author: finish06

CHANGELOG.md

@@ -4,9 +4,9 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.21] - 2021-04-18
 ### Added
 - Support for UDMP
-
 ### Fixed
 - Support for CSRF