Correctly permute all input constraints #753
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joshuafcole
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This is WIP. It still requires a documentation pass.
It addresses the issues with applyInputs being either too greedy (applying to all valid scans as it did initially) or too conservative (applying to only one at a time). The method here is based on Power Sets, specifically using the neat bitflag trick of using a single iterator from 1..(N - 1) to signify the inclusiveness of the subsets.