Git commits in Moodle 4.0.x by John Yao

commit b67e022b7fbd6bf7f9f5f9048f28d4c901ade426
Author: John Yao <johnyao@catalyst-au.net>
Date:   Thu, 14 Jan 2021 14:19:08 +0800
Tag:    v4.0.0-beta

MDL-70627 filters: aarch64 mimetex type support for filter tex notation


commit 11886d37ed9fdc8968c13077c6f74e5cdd609b0a
Author: John Yao <johnyao@catalyst-au.net>
Date:   Thu, 19 Nov 2020 09:36:32 +0800
Tag:    v4.0.0-beta

MDL-67636 gradebook: Prevent exposing hidden grade in locked category


commit b964ba6373a5d2f006e5e737499772895dca5613
Author: John Yao <johnyao@catalyst-au.net>
Date:   Thu, 19 Dec 2019 10:41:32 +0800
Tag:    v4.0.0-beta

MDL-65390 accessibility: correct focus after "Show more" clicked