1 What's not implemented (and should be)
2 --------------------------------------
5 - blit bitmaps (should respect rotation and pixel formats)
7 - loading bitmaps from image files (jpg, png, bmp, pnm ...)
11 - finish framebuffer backend (SDL does not work on most of my framebuffers)
12 - other than SDL X backend (SDL does support only one window)
13 - some overall initialization routines
14 - backed event handling
16 * Fix contrast - pass GP_Pixel so each channel could have different increment
18 * Meditate about bit endians and why these aren't separate pixel types
19 (which would make our lives a bit easier)
29 - drawing with alpha channel