Developer credits
Git commits in Moodle 3.1.x by Peter Miller
commit f3460b0fc61923e22c7fca8dd13f4275ec918409 Author: Peter Miller <peterm9@goshen.edu> Date: Mon, 04 Jan 2016 17:52:30 +0800 Tag: v3.1.0-beta MDL-52078 gradebook: Stop totals including hidden items.