make sure the actor names are all url encoded.
Move Datum related stuff into its own file and expand it.
Replace FaktureBeauftragen.Position with FakturaPosition.
Log context start and stop.
name subactors to make debugging easier.
Cosmetics.
Reference self instead of uninitalized command distributor.
Fix AggregateKey.
Fix bug with the wrong sender of commands.
Log received commands.
Debug log all state transitions.
Don't discard acks for already marked unclean.
Preserve sender of subscribe/unsubscribe.
Don't debug log forwarded messages in sharder.
Fix problem with missing position updating in aggregate subscription manager.
Fix initiatedBy.
Fix CompositeName unapply with urlencoded parts.
Fix offsets in aggregate subscription manager.
WIP: BezugSpec.
Add more impl to InkassoFall.