Update CHANGELOG.md

Author: nadar

CHANGELOG.md

@@ -4,8 +4,9 @@ All notable changes to this project will be documented in this file.
 
 This project adheres to [Semantic Versioning](http://semver.org/).
 
-## 1.0.4 (in progress)
+## 1.0.4 (1. January 2018)
 
++ Disable core commands.
 
 ## 1.0.3 (12. December 2017)
 
@@ -23,4 +24,4 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## 1.0.0 (13. May 2017)
 
-+ First release.
++ First release.