Git commits in Moodle 3.7.x by John Yao

commit b0f9bb4a2c638d352844c9d81489ff4a73140b77
Author: John Yao <johnyao@catalyst-au.net>
Date:   Mon, 16 Dec 2019 08:28:04 +0800
Tag:    v3.7.4

MDL-67524 book: fixing view hidden chapter issue


commit 93ade38caaac108c94d91b8351eb92be9843bdfa
Author: John Yao <johnyao@catalyst-au.net>
Date:   Wed, 03 Jul 2019 14:47:57 +0800
Tag:    v3.7.2

MDL-65517 block_timeline: Hide completed course modules in Timeline


commit c5892e5e37a63a39ed8a899379531f4ba08e7b0e
Author: John Yao <johnyao@catalyst-au.net>
Date:   Tue, 28 May 2019 14:39:39 +0800
Tag:    v3.7.2

MDL-65116 mod_assign : Assignment due date does not update for groups