TODO
====

General:
* Highlight tile borders
* Sounds, everywhere
* Splash screens
* Nice front menu
* Multi-line level names
* Paging for level screen
* Packaging
* Test on Windows
* Improve Arrow behavior when on arrow and arrow rotator button
* Sleep
* Don't pause forever while loading unofficial levels
  * For user levels, we can update the cache on level save, but that
    would require a more global cache. Maybe centralise this in
    data.py or somewhere?
* Two colours plus eating bug

Source:
* README

Levels:
* Tutorial levels
* Reorder levels by difficulty

Level Editor:
* Documentation...
* Upload level button
* Download level dialog
* Overlapping OK & Cancel buttons in one of the popups