Schmir/key broadcaster

[schmir]

Require additional keyBroadcaster argument in addKeyperSet

Previously we only allowed the keyper set contract to broadcast eon keys. Now we pass an additional keyBroadcaster address when calling addKeyperSet.

[jannikluhn]

I think the broadcaster address would fit better into the keyper contract than into the manager contract. In some sense, it's an additional property of the keyper set similar to the threshold.

[schmir]

I think the broadcaster address would fit better into the keyper contract than into the manager contract. In some sense, it's an additional property of the keyper set similar to the threshold.

I am fine with changing that. I'd argue that the same is true for the activation slot. Let's discuss this in the daily.

[schmir]

Replaced by #4