https://github.com/abranson/rockpool is up, but it's very preliminary and not ready for day-to-day use, so please don't upgrade your pebble classics to v3 just to try it or you'll be sorely disappointed. I wanted to fix the crash on callEnded, but ran out of time and thought it best to get it up asap anyway. Contributions welcome.
The OrganizerAdaptor, which uses the Qt Organizer API to fetch appointments out of your calendar and insert them into the timeline, doesn't find any events. From looking at Fahrplan, it seems that Sailfish doesn't support that API, and we have to use a different mechanism to access the SQLite file directly. I put the discovery code in the initialization, but it doesn't work yet.