Highlight features which are non-standard

[dstorey]

Would be nice to add a label or equivalent for non-standard features, to make it more clear they are not expected to be supported cross-browser.

Bonus points for sorting them in some way or having a filter to hide them.

[jonathansampson]

I was thinking yesterday about adding a meta file that holds tangential information about all of the browsers, versions, and enumerated properties. This would be a great way to associate related specs, and more.