*`url="STRING"`: Base URL of Gitlab instance (example: `https://tk-sls.de/gitlab`).
*`project_id=NUM`: ; `NUM`: Positive Integer, valid project ID in Gitlab specified by `url` (example: `42`).
The following optional attributes enable or disable additional project information:
*`commits="STRING"`: Optional; if set, `STRING` can be either `all` (show a list of recent commits, the default) or `none` (do not show a list of recent commits).
*`releases=STRING`: Optional; if set, `STRING` can be either `all` (show a list of all releases of this project, if any) or `latest` (show a link to the latest release of this project, if any) or `none` (do not show releases of this project, the default).
The following optional attributes modify the behavior of the list of commits: