Git commits in Moodle 2.9.4 by Dmitrii Metelkin
commit 8aa81abdc0e77663e847ab4c4b9c1703014c86d3 Author: Dmitrii Metelkin <dmitriim@catalyst-au.net> Date: Fri, 06 Nov 2015 12:23:38 +0800 Tag: v2.9.4 MDL-51314 mod_assign: cache group membership in can_edit_submission