Add Mattermost changelog entry for version 7.4
- Adding a changelog entry for the Mattermost 7.4 upgrade alongside a list of the latest Boards features introduced.
Closes #73 (closed)
The Helmholtz Codebase and Mattermost will not be available between May 2nd, 16:15 and May 2nd, 17:45. In preparation of the GitLab major upgrade 17.0 a database maintenance is required.
Please subscribe to service-announcement@hifis.net if you would like to receive regular information on HIFIS service announcements via email.
Closes #73 (closed)