- is the pack Lamport clock really useful vs only topological sort?
  - topological order is enforced on the clocks, so what's the point?
  - is EditTime equivalent to PackTime? no, avoid the gaps. Is it better?
    --> PackTime is contained within a bug and might avoid extreme reordering?
- how to do commit signature?
- how to avoid id collision between Operations?
- write tests for actions
- migrate Bug to the new structure
- migrate Identity to the new structure?