% darcs tag --checkpoint -m release-0.8
 -- tag release-0.8, and allow for --partial get.

% darcs dist -d twill-0.8.3

where to change version number:

   setup.py, version & download URL;
   twill/__init__.py
   doc/index.txt, version, download URL, and date;

for release:

    * copy doc/ over to twill/.
    * tag;
    * generate .tar.gz
    * generate egg;
    * update pypi (setup.py register);
    * announce on clp, twill@lists.idyll.org, web-sig@python.org;