Update CHANGELOG and module description for hotfix release

Author: Karneades

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](https://github.com/swisscom/powergrr/compare/v0.4.1...master)
+## [Unreleased](https://github.com/swisscom/powergrr/compare/v0.4.2...master)
 
 ### Added
 
@@ -15,10 +15,14 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### Removed
 
 ### Fixed
-* Fix bug in `Get-ClientCertificate` when using `Get-Variable`
 
 ### Security
 
+## [v0.4.2](https://github.com/swisscom/powergrr/compare/v0.4.1...v0.4.2) - 2017-08-08
+
+Fix bug in `Get-ClientCertificate` when using `Get-Variable`. Make the
+certificate authentication working again.
+
 ## [v0.4.1](https://github.com/swisscom/powergrr/compare/v0.4.0...v0.4.1) - 2017-08-08
 
 Fix typo in variable name in `Invoke-GRRFlow` for flow type _FileFinder_.

PowerGRR.psd1

@@ -12,7 +12,7 @@
 RootModule = 'PowerGRR.psm1'
 
 # Version number of this module.
-ModuleVersion = '0.4.1'
+ModuleVersion = '0.4.2'
 
 # ID used to uniquely identify this module
 GUID = '5bdf023f-fe8a-4748-bd73-43a449791ba8'