Developer credits
Git commits in Moodle 3.4.x by Carlos Alexandre S. da Fonseca
commit fdddb80b708d10c00de3362bebc2f9559f694590 Author: Carlos Alexandre S. da Fonseca <bozohhot@hotmail.com> Date: Tue, 21 Nov 2017 20:28:13 +0800 Tag: v3.4.1 MDL-24678 mod_chat: Fixed race condition on chat module