Implement lsh

[perryzheng]

No description provided.

[jnievelt]

Seems like this should be rand.nextDouble * radius ?

[jnievelt]

Overall seems like a lot of code where we could probably get away with just EuclideanHasher. I'd also consider dropping the 'hashing' in the package and just leave it 'lsh' (the h already stands for hash).

[johnynek]

this should all be in InnerProductSpace when F =:= Double.

[ianoc]

Sorry my bad, git foo on cmd line broke stuff and closed all of these

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