dither

This repo implements a number of the dithering methods detailed on https://surma.dev/things/ditherpunk/.

light.png, light-hires.jpg, dark.png, and dark-hires.jpg are from Surma's post, used under CC BY-NC-SA 4.0.

david.png is taken from the wikipedia article on dithering, where it was released into the public domain.

I took cricket.jpg.