This was inspired by others' work on nyc and istanbuljs and trying to modernize those codebases - I wanted to try [again] to improve the speed of at least the nyc-bin test suite. I thought parallelization would make things a lot faster but didn't have much luck getting anything passing, even trying to use mock-fs and what not.

So I thought I'd try my hand at a smaller codebase... but it looks like the self instrumentation is causing things to fail.

I still think the intention is good and if the tests written for c8 can run in parallel then we can avoid the slow cycles we have had on nyc!