Developer credits
Git commits in Moodle 3.1.x by Tobias Reischmann
commit 25bb8b64f95d6bd339b87eed7cc6e9df4dbb38cc Author: Tobias Reischmann <tobias.reischmann@wi.uni-muenster.de> Date: Wed, 16 Nov 2016 23:49:16 +0800 Tag: v3.1.4 MDL-55275 assign: Prevent exception under admin role assignment.
commit e23d29dc91b575df56e3e625253ba8930c0a9faf Author: Tobias Reischmann <tobias.reischmann@wi.uni-muenster.de> Date: Fri, 10 Jun 2016 20:43:26 +0800 Tag: v3.1.2 MDL-54892 core: Pass proper parameter for plugin uninstall queries