For version 6.0, added the "\doznumtowords" macro, which
will take a counter and output it in dozenal words. Which
words it uses can be customized; I have made no attempt to
internationalize this with different languages, because I
haven't the foggiest how to do so other than simply writing
option packs with different definitions in them. Also did a
complete rewrite of |\basex|, so its workings are now
(almost) comprehensible. Finally, darkened the tally marks
and put in hand-written italic shapes.
