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Git commits in Moodle 3.5.7 by Bas Brands
commit 7a548abf0115f6beb8f0bf82327af9430c8e6b29 Author: Bas Brands <bas@moodle.com> Date: Mon, 13 May 2019 18:29:48 +0800 Tag: v3.5.7 MDL-65581 core_blocks: change classname for hidden blocks