iang/arctic: Library and benchmark program for Arctic and Shine @ 90f80136c2ee9b9469c9f8adbfa570e783d0eecf

Library and benchmark program for Arctic and Shine

Ian Goldberg 90f80136c2 Add some comments about the hash functions		%!s(int64=2) %!d(string=hai) anos
src	90f80136c2 Add some comments about the hash functions	%!s(int64=2) %!d(string=hai) anos
Cargo.toml	55187fb080 Use itertools::combinations instead of rolling our own	%!s(int64=2) %!d(string=hai) anos