Developer credits
Git commits in Moodle 3.5.x by Nicolas Dunand
commit a0b2b766132b04e1f538c7495cc8c3fbfb2505b2 Author: Nicolas Dunand <nico@kolya.ch> Date: Fri, 02 Feb 2018 22:25:41 +0800 Tag: v3.5.0-beta MDL-61344 mod_assign: Show additional files when adding submission