XHTML 2.0

Big changes in XHTML 2.0, as reported by Sjoerd Visscher and Simon Willison. I told Kelly about a few, but... geez, I don't see a transition plan from HTML 4 to XHTML 2.0. They're changing so much stuff that I'd guess we'll be stuck with XHTML 1.1 for quite a while.

But what do I know, eh? I'm sour they're renaming q to quote. I thought all the inline tags got short names on purpose.