Gitlab will be downgraded to CE in a couple of weeks due to the fact that Gitlab does not offer free Starter licenses to non-profits anymore. In the meantime, don't use any of the EE features. We apologize for the inconvenience.

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'