TODO
====

o Input file formats:
- Frames. E.g.: 'images.gif[0-3]'
- Image regions. E.g.: -resize '@10000' or '10000@'
- File name references such as image-%d.jpg[1-5]
- Stream buffering
- label:"Text" and text:-'[0]'

o One day:
- Split things like geometry. So 500x600 => 500, 600.

