Eric Patey

#89

I haven't had a chance to actually measure the perf difference, but you could replace ``` let matchingHeadCount = zip(lhs, rhs).prefix() { $0.0 == $0.1 }.map() { $0.0 }.count let...

So I did the perf test. After I added the proper `.lazy`'s to the sequences, the perf difference between the sequence oriented approach and the `unsafeBufferPointer` approach is pretty small,...