Developer credits
Git commits in Moodle 2.5.0 by Matt Petro
commit f5f36584801fb6873530ebd23f0d8b5734aae703 Author: Matt Petro <petro@engr.wisc.edu> Date: Tue, 16 Apr 2013 19:19:23 +0800 Tag: v2.5.0-rc1 MDL-34403 mod quiz: fix error during enrolment
commit a538cf839e5fa1a205facdb97dc2364be474d010 Author: Matt Petro <petro@engr.wisc.edu> Date: Fri, 02 Nov 2012 23:07:02 +0800 Tag: v2.5.0-beta MDL-36025 qtype calculated: Fix handling of "-0"