0.4:
- better repository UI

later/any:
- make it possible to cancel while performing certain operations (downloads)
- better progress indicator during package download (try to show actual progress)
- save/load/remember package selections
- automatically run apt-get clean
- menu item to run apt-get autoremove
- lock package database - fcntl
- configurable catalog update settings (time interval, always automatic)

unknown:
- add filter to sort packages by date (where can I get the date information from?)
- show what repository a package is in (apt-cache dump show this but in a stupid form)
