Developer credits
Git commits in Moodle 3.0.x by Greg Faller
commit 32f27a6c693e04b87baeacb98b8d03ce249ff3aa Author: Greg Faller <greg.faller@flinders.edu.au> Date: Thu, 14 Jan 2016 09:48:57 +0800 Tag: v3.0.3 MDL-50083 mod_assign: unlock submission when adding attempt