Developer credits
Git commits in Moodle 3.3.5 by Ryan Wyllie
commit 83b01d7505b6e90201c8b010384eb96423b451bf Author: Ryan Wyllie <ryan@moodle.com> Date: Tue, 16 Jan 2018 11:49:55 +0800 Tag: v3.3.5 MDL-60918 message: use current user in message preference update