Employ

$ employ promote test
$ employ promote staging
$ employ promote production

- if previous env was not tagged before, set warnings

$ employ diff production
$ employ diff production --reverse

- current tree against other tag/branch, using merged PRs description metadata to build a meaningful and colourful CHANGELOG.

$ employ promote -i test

- you can interactively select which PRs are going to be.

$ employ rollback test
$ employ rollback staging
$ employ rollback production