I re-wrote blosxom_path_info_handler and cleaned it up a lot. The adjustments also allow people to create categories that look like dates (and previously would get interpreted as dates and screw things up).
I'm going through the documentation, the bug list, and a couple of other changes I want to make. I'll also tackle any low-hanging fruit that's on my todo list. Otherwise, I consider PyBlosxom 1.3 pretty complete. If all goes as I plan, it'll be out before Christmas in some form.