Our hope with Greenkeeper is to get all of npm on it, so we all get to benefit from it. In addition, we could do things like pro-active issue-opening. Say Unde

Our hope with Greenkeeper is to get all of npm on it, so we all get to benefit from it. In addition, we could do things like pro-active issue-opening. Say Underscore releases a new version and Ember uses it, gets a Greenkeeper dependency bump, and we see its Travis fails, we can open an issue on Underscore to say they broke Ember (all opt-in, of course).