Limit Concurrent Tests

[zac-rivera]

An option such as parallel.concurrency(4) to limit four tests running at the same time would be helpful. I've implemented this change and can submit a pull request if that'd be easier, but I'm using an npm library called semaphore as a module dependency that would be added to the package.json to limit the tests.

[danielstjules]

I think I'd be open to it :) Could I see the changes you made? Would be curious how you've implemented it so far

[zac-rivera]

Yeah fill free to look at the changes. I made the pull request so you can review them. Let me know if there are any coding standards you follow, or implementation changes.

[danielstjules]

Thanks again!