common subscriber:

sharedstate/non-sharedstate: auto. explicit non-state -> keyword raw
network: default. only local: keyword local  (of iets als netsubscribe?)

on-node-added -> state request: 
Request for:
- all known state topics
- all undecided topics

detect sharedstate/non-sharedstate at first send:
- subscribe initially creates subscription for a detection function. At the first message this function detects, 
and sets up the final subscription.

- broadcast is nu bijv. C***** TOPIC sender_id. verander naar:
 ****** TOPIC C 
 ****** TOPIC S

enz.
TODO: should net.send have a broadcast flag?