Developer credits
Git commits in Moodle 3.5.5 by Amaia Anabitarte
commit 15c3d7e2082ba64ca52ca40c9a9561d1d7726e01 Author: Amaia Anabitarte <amaia@moodle.com> Date: Wed, 19 Dec 2018 22:23:05 +0800 Tag: v3.5.5 MDL-64385 user: Case insensitive comparison for email domains