Typos, consistency, anal retentiveness and addition of a note on audio and video encoding.

I am hoping that nything that can reasonably be nit picked, has been so
picked. So I accept that the juxtaposition of reasonable and not-pick
might require some thought.

Order of editors; Current editors, longest standing first, followed by
past editors, most recently resigned first.

Spelling of Web and Web site

User Agent

Consistent use of browser under use cases, vs User Agent under
requirements

and so on, ad nauseam.

I expect I still missed a lot.