TODO list from Pixelize 0.8.0

- Open file listed on the command line

- Option to toggle between the origional and rendered image.

- Option to tag good images and scroll between them

- Speed up make_db.  It currently takes way too long.
   - Partially done v0.9.0

- make_db meeds to know about your X display.  This is
  stupid since make_db never opens any windows.  This is
  an issue with imlib.
  
- Add an option to make_db to update the pic_db.dat file by
  somehow checking if files have been added, removed
  or changed, and then changing pic_db.dat as required.

- Make all of the error and warning messages that Pixelize
  currently prints to the console, come up in a popup
  window.

- Hourglass
   - Done v0.9.0

- Make Pixelize deal with aspect ratios correctly.  I think
  this will be really hard, since the current way of storing
  the info in pic_db.dat knows nothing about aspect ratio.

- Write man pages.

- Add a percent done thingy to Pixelize when reading pic_db.dat.