Currently ImageBuffer uses #[derive(Debug)], which prints something like this (where every channel of every pixel is printed):

ImageBuffer {
    width: 64,
    height: 64,
    _phantom: PhantomData,
    data: [
        0,
        0,
        0,
        0,
       ...
        0,
        0,
        0,
    ],
}

This is frustrating when debugging my own types which contain an ImageBuffer, since even a few reasonably sized images add up to tens of millions of lines of output. It would be much nicer to see something small like ImageBuffer<Rgb8>(64x64), or perhaps something like ImageBuffer(64x64x4) if we don't want to enforce a trait bound on the pixel format. I'm open to ideas over what the format should be, and I'm happy to make a PR for this. Implementation would simply be a custom Derive impl for ImageBuffer and any other image types.