Add additional benchmarks

[belsrc]

We should add in additional benchmark tests for the function centric packages. These should probably take the form of:

• Current implementation (don't call just the function as it is an extra step, unless you wrap the following in a function as well)
• A list of competing implementations.
• Make sure setup is done outside of the bench, unless it is relevant to the test.

Example: map versions of for, for..in, .map, etc.