Prepare to release 1.12.0

Author: Chris Wiechmann

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/).
 
-## [Unreleased]
+## [1.12.0] 2022-06-09
 
 ### Added
 - New parameter apimanagerUrl added, which can be used instead of host and port.