Developer credits
Git commits in Moodle 3.3.6 by Dan Marsden
commit bdb58432909f279b8aedfffb1324bbe656b07142 Author: Dan Marsden <dan@danmarsden.com> Date: Thu, 15 Mar 2018 08:28:07 +0800 Tag: v3.3.6 MDL-59857 mod_scorm: use valid length for grade type field.