[1] Add detail=0 for pointerevents (#116) (NavidZ著, 7/26/2016, 2:34:16 PM) <https://github.com/w3c/pointerevents/commit/9f380b6aab502a2392734b55e28e69359877f47e>

[2] Stop overriding UIEvent's detail attribute (annevk著, 10/25/2016, 10:00:16 AM) <https://github.com/whatwg/html/commit/bd3239b5b38a157a61cb570df5c80ad1dbc2b9d4>