Git commits in Moodle 3.8.4 by Adrian Perez

commit 69e2477f90bc4862e07a305ce79e6c249d5edb3c
Author: Adrian Perez <adrian.perez@ffhs.ch>
Date:   Wed, 06 Nov 2019 17:56:56 +0800
Tag:    v3.8.4

MDL-67126 assign: set completion state for all group members