Developer credits
Git commits in Moodle 3.0.6 by Michael Aherne
commit 4063900e2bcd395c324ca54163205e25e0a02bb9 Author: Michael Aherne <michael.aherne@strath.ac.uk> Date: Fri, 08 Jul 2016 17:48:00 +0800 Tag: v3.0.6 MDL-55161 assign: Check for existence of gradebook feedback plugin