bump version to v1.12.1.0dev
bump version to v1.12.1.0, update release notes
Merge pull request #841 from boegel/v1.12.x

bump version to v1.12.1.0, update release notes
Merge pull request #842 from hpcugent/v1.12.x

EasyBuild v1.12.1
Merge branch 'master' into develop

Conflicts:
	setup.py