prepeared CHANGELOG for release 0.6.1

Author: ThomasSteinbach

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.6.1] - 2021-04-07
+
+### Changed
+
 * `PredefinedVariables` return in all cases a proxy object, which calls `os.environ` or `os.getenv` as late as possible.
   This helps when overriding (monkeypatching) variables in pytestes.