http://korma.wmflabs.org/browser/code_contrib_new_gone.html mjust answer these questions:
Who are the new code contributors (commits + reviews)? Are they increasing their involvement? Who seems to be on a way out or gone? How are our contributor intake & loss evolving?
* Number of new contributors with 1 / 2-5 / 6+ changes submitted in the past 3 months (values may be fine tuned based on actual data).
* (How to register increasing engagement versus one-offs or new contributors disengaging and vanishing after a short period?)
* Number of contributors stopping contributing or decreasing continuously in the past 3 months.