Adding carbon to the training setup

[photon-e]

Googles new language carbon is making waves now. i am sure it will eventually be added here as soon as posible.

[hobovsky]

Requests for new languages should be posted in Codewars Runner repository: https://github.com/codewars/runner

[photon-e]

ok, thank you.

[hobovsky]

Closing the discussion since the request has been posted in the runner repo here: codewars/runner#198