Developer credits
Git commits in Moodle 2.6.x by Andrew Schmadel
commit 53f93548c781579d1589eac8d21f3b8c4c59e03d Author: Andrew Schmadel <aschmadel@learningobjects.com> Date: Sat, 23 Aug 2014 07:09:18 +0800 Tag: v2.6.6 MDL-46844 Embed LTI External Tools with an IFrame