Developer credits
Git commits in Moodle 3.9.x by Rossco Hellmans
commit 383b0f95abd7f5787a5e2e3469d007a4771031f5 Author: Rossco Hellmans <rosscohellmans@catalyst-au.net> Date: Wed, 13 Mar 2019 09:41:13 +0800 Tag: v3.9.0-beta MDL-64310 backup: allow session to be released during backup/restore