Maintenance downtime of gitlab.uni-oldenburg.de on 2019-08-28 between 6:00 - 6:30. We'll update Gitlab to 12.1. (Release highlights https://about.gitlab.com/2019/07/22/gitlab-12-1-released/ (watch for FREE features))

Tags give the ability to mark specific points in history as being important
Repository has no tags yet.
Use git tag command to add a new one:
git tag -a v1.4 -m 'version 1.4'