komihash 5

[avaneev]

Please update komihash to v5. I would also like to inquire why komihash's benchmarked speed is low in your .NET implementation? I assume it's due to the use of 64x64 to 128 bit multiplication intrinsic which may not be available in .NET. Could you recheck the implementation? It's possible to use the __umulh intrinsic instead of _umul128, which is also fast.

There was a question about streamed implementation - komihash features a streamed implementation now. https://github.com/avaneev/komihash