Developer credits
Git commits in Moodle 3.3.3 by Davo Smith
commit cdd6d0d240ef12387c878b4273f5b7d3fdc76740 Author: Davo Smith <davo.smith@synergy-learning.com> Date: Fri, 06 Oct 2017 19:46:05 +0800 Tag: v3.3.3 MDL-60366 mod_feedback: fix deletion of valid anonymous duplicates