Another RFC regarding the patch in
#255 now that I have more free time...

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I've been using this for quite a while now without any issues, and I've since confirmed that ShouldDither, while great, doesn't affect the sleep screens, even those processed by nickel itself, so it doesn't deprecate this patch.
@davidfor: Do you have any further comments, or should I go ahead and send a PR to Kovid?