Developer credits
Git commits in Moodle 2.7.9 by David Monllao
commit a5155586fed22fa92c3c847c8e00b123af9fe66b Author: David Monllao <davidm@moodle.com> Date: Mon, 11 May 2015 16:56:06 +0800 Tag: v2.7.9 MDL-50177 completion: Also accepting cm integer strings