Updated Mattermost to 4.2.2 (GitLab 10.1)
Mattermost 4.2.2 has been tested with GitLab SSO with official release on December 8 from https://about.mattermost.com/download/. We've tested it with the latest version of GitLab from the 10-2 stable branch.
Mattermost 4.2.2 contains a security fix, so we recommend updating.
Edited by Harrison Healey