* Must write saver api
* must turn into shared lib
* Must comment:
    blend.c
    color.c
    colormod.c
    context.c
    draw.c
    file.c
    font.c
    format.c
    grab.c
    grad.c
    image.c
    rgba.c
    rgbadraw.c
    scale.c
    updates.c
    ximage.c