Interest in concurrency support

[hamburghammer]

Hi there, I was playing with your tool and thought it would be interesting to do the source analyses concurrently. The performance gain isn't noticeable with a small set of files but on larger project like moby/moby it will be significantly faster. Are you interested on such a feature? Feel free to pull the commit that you want or let me know if you want me to create a pull request.

[hamburghammer]

This is my repository :see_no_evil:

[gsquire]

Hey, I think we can definitely add that in. It makes sense to me because each file is independent of the rest.

If you want to submit a CR, it may be easier to add feedback that way! Just let me know.