XML Normalization

Hah, that’s a pretty interesting question we probably need to answer.

Either it’s not a problem, or we need to say something about it in the spec.

Beyond the XML spec, it would be nice to know how a couple/few widely used libraries deal with this?

I can do a little digging later.

Flagging this for @bwiernik and @Denis_Maier as we work on revisions.