Release v2.0.4

Author: MarcelWaldvogel

CHANGELOG.md

@@ -4,7 +4,7 @@ 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/).
 
-## 2.0.3+ - [Unreleased]
+## 2.0.4 - 2019-09-19
 ### Added
 * `xcrefreshroster` to clear a faulty roster cache.
 * `xcdeluser` to clear most user-specific information maintained by `xcauth`