MVP Bench calls (#72)
MVP Bench calls (#72)

* Switch from u64 to usize

Since crates such as rayon (which will be used for ThreadPools) takes usizes. Furthermore this makes the code OS arch independent.

* Update default values for tree operations

* Perform tree operations in thread pool

* Update code to use raw threads rather than Rayon

spacejam/sled,spacejam/sled,spacejam/sled