LGTM, nice cleanup https://codereview.appspot.com/559500043/
- Implement Grob::event_cause, Grob::ultimate_event_... jonas . hahnfeld
- Re: Implement Grob::event_cause, Grob::ultima... hanwenn
- Re: Implement Grob::event_cause, Grob::ultima... nine . fierce . ballads
- Re: Implement Grob::event_cause, Grob::ultima... dak