Developer credits
Git commits in Moodle 3.7.0 by Frédéric Massart
commit b91ddd160e29013a41a0d6b1efd22724c42ab9e1 Author: Frédéric Massart <fred@branchup.tech> Date: Fri, 20 Oct 2017 17:24:08 +0800 Tag: v3.7.0-beta MDL-60518 core_user: A user with ID 0 is never a real user