Fix changelog

Author: Antoine Lelièvre

CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes to this package 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).
 
-## [1.0.0]
+## [0.9.0]
 
 ### Added
 - Added the [ShowAsDrawer] Attribute to display a drawer beside an input port