Changelog

• ff5af95 Generate changelog for releases (#7)
• afcb1fd Add sweeper for orphaned test resources (#6)
• 200c42d Add project name validation (#5)
• e5b6284 Update documentation (#4)
• d50bea7 Restrict max-parallel matrix testing (#3)
• 6a6f14a Merge pull request #2 from BarnabyShearer/sensitive
• 3cf866e Mark environment.values as sensitive
• 7014493 Fix incorrectly cased project name in docs