New hashing algorithm

[sdkrystian]

We currently use FNV-1A, but there are much faster algorithms out there that we can use (e.g. murmurhash or seahash).

[vinniefalco]

murmur has a vulnerability

[sdkrystian]

The Dimov opinion: Try xxhash32/64

[sdkrystian]

Peter has settled on murmur2