[tei-council] some attribute issues

[Syd Bauman]

> RELAXNG and XSD don't support the idea of #FIXED, I think.

??

   attribte version { token "P5:r1234" }



> I'm perfectly happy to leave it as decimal myself.

Then you're precluding anyone ever differentiating between 1.0 and
1.0.1. Yes, tweaks that cause such a small version number change in
general won't change the schema in any significant way, but why
preclude precision?