Developer credits
Git commits in Moodle 3.4.0 by Vervoort, Claude
commit 76f11421a4e418b0e95e5c06bf1d8e428896e440 Author: Vervoort, Claude <claude.vervoort@cengage.com> Date: Tue, 31 Oct 2017 21:57:38 +0800 Tag: v3.4.0-rc1 MDL-60007 mod lti: allow delete without content-type