This simple script will help you collect statistics about your programmers and generate a simple HTML report. First, install it:

$ gem install cobench

Then, run it locally and read its output:

$ cobench --coder yegor256 --verbose

This is how our report looks like.

Read these guidelines. Make sure you build is green before you contribute your pull request. You will need to have Ruby 2.3+ and Bundler installed. Then:

$ bundle update
$ bundle exec rake

If it's clean and you don't see any error messages, submit your pull request.