Developer credits
Git commits in Moodle 3.1.0 by David Risner
commit 4584c3de23b522ab4eb9f794e5063fa094394529 Author: David Risner <drisner@calstate.edu> Date: Tue, 12 Apr 2016 07:28:55 +0800 Tag: v3.1.0-beta MDL-53095 repository_merlot: change merlot url use https