Git commits in Moodle 3.11.x by Jamie Stamp

commit 3b4eded721b1dd70e1a4916fbcba0e2e8b2e37d6
Author: Jamie Stamp <jamie.stamp@catalyst-eu.net>
Date:   Thu, 26 Nov 2020 19:58:05 +0800
Tag:    v3.11.0-beta

MDL-70341 tasks: Allow disabled tasks to be overridden

commit b0c2b85310ae9a136c3bf9e196254b748c208fc9
Author: Jamie Stamp <jamie.stamp@catalyst-eu.net>
Date:   Mon, 09 Nov 2020 20:25:00 +0800
Tag:    v3.11.0-beta

MDL-69121 core: Add ZSTD/Gzip compression options to Redis sessions

commit 30d2f286b6ce87c3a50bfed0f4fd1f42741c9e17
Author: Jamie Stamp <jamie.stamp@catalyst-eu.net>
Date:   Thu, 08 Oct 2020 00:27:35 +0800
Tag:    v3.11.0-beta

MDL-65843 tasks: Allow schedules to be overridden in config