🚀 New features and improvements

• feat: support allOf in a when context (#343) @garethjevans
• Adding unzip mock (#322) @cwiggs
• Add fileExists mock with helper methods (#312) @nre-ableton

🐛 Bug fixes

• Remove obsolete doGenerateSubmoduleConfigurations (#341) @MarkEWaite
• Remove default values from git plugin example (#339) @MarkEWaite
• Fix WhenDeclaration environment condition. (#326) @pkwarren
• Handle failures in sh step with returnStdout (#329) @nre-ableton
• Fix the buildingTag() method's support (#334) @dduportal
• Safer lazy initialization of variables (#332) @nre-ableton
• Allow use of ant path expressions on branch validation (#315) @epsilo
• fix(declarative) withCredentails usernamePassword mocking conflict (#311) @stchar
• Update Gradle wrapper to 6.6.1 (#293) @nre-ableton
• Add test for nesting stages including parallel (#297) @Willem1987
• Add test for docker agent with Closure param (#296) @Willem1987
• Fix MissingPropertyException to show the actual property missing (#300) @Willem1987
• Register timeout with integer argument (#294) @nre-ableton