previously, if you used, ie, "--cost=body-top", the cost would show in
the tab AND body-top. Since the help text implies that the way to
accomplish this should be "--cost=tab --cost=body-top" (and because if you
put it in body-top, it's probably because you want to save space on the
tab)
* make domdiv a better behaved python package (see #131)
* move code from __init__.py to main.py to make import quicker and make version work without dependencies
* update languages import to use pkg_resources, fix tests
* update readmes
* change font lookup, font readme notes
