Library and benchmark program for Arctic and Shine

Ian Goldberg e716ba0ae8 Add Cargo.lock file 9 mesiacov pred
src a75bd1e0ed Use references, not copies, in the inner loop of gen 9 mesiacov pred
Cargo.lock e716ba0ae8 Add Cargo.lock file 9 mesiacov pred
Cargo.toml 6029009659 Use itertools::combinations instead of rolling our own 9 mesiacov pred