Developer credits
Git commits in Moodle 2.3.x by Matt Petro
commit c8b33aa772aeda566c6f43892c0e46c131dd6a3c Author: Matt Petro <petro@engr.wisc.edu> Date: Tue, 16 Apr 2013 19:19:23 +0800 Tag: v2.3.7 MDL-34403 mod quiz: fix error during enrolment
commit 2cae75aacc0f1829aa957228e95a6033fc8f2caf Author: Matt Petro <petro@engr.wisc.edu> Date: Fri, 19 Oct 2012 22:59:42 +0800 Tag: v2.3.4 MDL-36025 qtype calculated: Fix handling of "-0"
commit 30ef79639cebdb091cd534e6cb5447d00f3f049b Author: Matt Petro <petro@engr.wisc.edu> Date: Wed, 10 Oct 2012 01:48:30 +0800 Tag: v2.3.4 MDL-35717 quiz: fix overdue attempt processing