rangeset0.1.0

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This library lets you represent a set of integers as a list of ranges or a "RangeSet" if you will.

So instead of MapSet.intersection([1, 2, 3, 4], [3, 4, 5]) == [3, 4] you can have RangeSet.intersection([1..2, 3..4], [3..5]) == [3..4]