[whatwg] Problems with the Atom Conversion algorithm.

[Edward O'Connor]

> 2. The <title> of atom entries is constrained to contain text only,

That's not quite right. <atom:title> is an Atom Text Construct, which,
despite having the word 'text' in its name, can contain all sorts of
things. <atom:title> is the same as <atom:summary>, <atom:content>,
and <atom:rights>, so the algo should handle it in the same way as it
does <atom:content>.