I merged all the changes I've made in the PYBLOSXOM_1_2 branch back into HEAD. Now I'm in HEAD and I'm going to do PyBlosxom 1.3 work until I'm ready to release. At that point, I'll make another branch for PyBlosxom 1.3 fixes and such.
I've got the following items in my todo list for PyBlosxom 1.3:
figure out what additional variables are needed to produce RSS 2 and Atom 0.3 feeds without the rss2renderer and without additional plugins 
add a timezone variable to the data dict
possibly add new sample flavours: rss 0.9, rss 2.0, atom 0.3, and several html flavours 
minor clean-up and documentation work
Why make this PyBlosxom 1.3 and not another minor 1.2 revision? Well, it has to do with the adjustments needed to fix bug 1202107. PyBlosxom checks the content-type to see if it's xml and if it is, then it escapes the $title and $body variables which makes everyone trying to do an xhtml or other xml output sad. The only ways to fix the issue is to do a hack on the hack or introduce a backwards-incompatible change. Given that I'm more interested in the latter, I figured it's better to bump the version so that it's clearer that the user will need to make some adjustments to their PyBlosxom configuration when they upgrade.
8/6/2005 I added bug 1252678 to the list of bugs to be fixed in PyBlosxom 1.3.