[1] 27456 – Redefine Node.isDefaultNamespace(), Node.lookupNamespaceURI() and Node.lookupPrefix() (2016-04-19 11:49:37 +09:00 版) <https://www.w3.org/Bugs/Public/show_bug.cgi?id=27456>

[2] Make Attr inherit from Node again (annevk著, 2016-08-19 21:44:07 +09:00) <https://github.com/whatwg/dom/commit/625a0747f137454c155a7b577a9e45be1aa35a34>