Developer credits
Git commits in Moodle 3.4.0 by Connor Sheremeta
commit d50c3db5c743ae3c5fea404abde45e25ee451a28 Author: Connor Sheremeta <sheremet@ualberta.ca> Date: Wed, 30 Aug 2017 03:31:18 +0800 Tag: v3.4.0-beta MDL-54540 lti: Add allowfullscreen attribute to LTI IFrames