New script to grab contributor stats for all DDG projects on Github

...excluding company team members.
Since dates include midnight, it may not make sense to decrement them

Queries are, e.g.

>= Feb 17 00:00:00 && < Mar 17 00:00:00
>= Jan 17 00:00:00 && < Feb 17 00:00:00

...and so on - should yield full calendar month each time.