Developer credits
Git commits in Moodle 2.6.3 by Jean-Michel Vedrine
commit 081468fdb1d43beb0011cca09e460cdb3c47de02 Author: Jean-Michel Vedrine <vedrine@vedrine.org> Date: Wed, 07 Aug 2013 16:02:36 +0800 Tag: v2.6.3 MDL-41063 Lesson qformat_default class is missing an error function