Merge pull request #218 from activeadmin-plugins/drop-changelog

Drop CHANGELOG.md in favor of GitHub release notes

Merge pull request #202 from activeadmin-plugins/bump-v5-1-0

bump v5.1.0

Version 4.2.0

Version 4.1.2

Version 4.1.1

bump 4.1.0

Version 4.0.0

Version 3.1.0

Merge pull request #139 from activeadmin-plugins/3.0.0

prepare 3.0.0

Merge pull request #65 from ifyouseewendy/fix_merge

Fix merging failed message