* remove parking_lot crate from nu-data as it is no longer being used
* remove commented out code from parse.rs
* remove commented out code from scope.rs
We split off the evaluation engine part of nu-cli into its own crate. This helps improve build times for nu-cli by 17% in my tests. It also helps us see a bit better what's the core engine portion vs the part specific to the interactive CLI piece.
There's more than can be done here, but I think it's a good start in the right direction.
