More cleanup output.
The TABLE-PLUS macro is now just TABLE. Less typing for writers.
Turn on --wrap automagically if a --stylesheet is specified.
Table of contents is now a proper(ish) UL.
Add depth-related ID tags to the LIs in our table of contents.

This lets us use the CSS TEXT-INDENT property to style our tables of
contents with nice indentation based on the header depth.
Fix formatting quirk.