Developer credits
Git commits in Moodle 2.9.x by Logan Reynolds
commit 8db188c8cc419895e8149d723e76f411341ff13a Author: Logan Reynolds <logan.reynolds@remote-learner.net> Date: Fri, 07 Jun 2013 10:16:44 +0800 Tag: v2.9.0-beta MDL-34684 tool_health: Added health check for course category structure