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Git commits in Moodle 3.8.3 by Martin Gauk
commit b1345143ea81ce3a0b3a6b2ebaaa177fcdce2ba1 Author: Martin Gauk <gauk@math.tu-berlin.de> Date: Fri, 17 Jan 2020 20:13:41 +0800 Tag: v3.8.3 MDL-51694 core_grades: use transactions when deleting