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Git commits in Moodle 3.5.2 by Claude Vervoort
commit c46c85055b4f7cc5b4ad3549dadea8833b17533c Author: Claude Vervoort <claude.vervoort@cengage.com> Date: Thu, 26 Jul 2018 23:20:04 +0800 Tag: v3.5.2 MDL-62993 ltiservice_memberships: make message an array per spec