Sanitizer should recognize HTML elements
and attributes.
New Allowed Elements:
article aside audio canvas command details
dialog figcaption figure footer header
hgroup mark meter nav progress rp rt ruby
section source summary time video war
(OK, audio and video were already there)
New Allowed Attributes:
autocomplete contenteditable contextmenu
draggable formaction icon low max min
open optimum pattern placeholder preload
pubdate required reversed spellcheck step
wrap
Attributes removed:
abbr charset loopcount loopend loopstart
noshade nowrap rev rules
Maruku supports @start and @reversed on
ordered lists. It doesn't seem to support
IALs on li elements, so you still can't
attach @value to an li.
