TODO:

Wow. There are lots of things that I want to do. Here's a short list
for now.

- Implement post tracking feature (just got too behind to do it in
this release.)

- Update posting tools, I'm not sure if the recurring stuff is obvious
enough.

- Add more customizable things about the way calendars are drawn.

- Put HTML filtering into the event text, so that people are only
allowed to put in certain tags.

- Better documentation.

- General code clean-ups are always desirable.