[skip ci] Update changelog for version 1.3.6

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
+## [1.3.6] 2020-03-16
 ### Fixed
 - Avoid NPE if given OAuth-Provider Profile is invalid (See issue [#143](https://github.com/Axway-API-Management-Plus/apim-cli/issues/143))
 - Actual API-Lookup when using additional criteria V-Host and QueryRoutingVersion (See issue [#151](https://github.com/Axway-API-Management-Plus/apim-cli/issues/151))