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Git commits in Moodle 3.1.3 by sam marshall
commit 6b1e6b6beba78a5daefb6af1e3eb6235cbc3802d Author: sam marshall <s.marshall@open.ac.uk> Date: Tue, 20 Sep 2016 21:49:10 +0800 Tag: v3.1.3 MDL-56038 Web services: json_last_error_msg not in PHP 5.4