Remove GameLog crud.
Make nonce incrementation atomic.
Remove dead code.
Extend message nonce width to long.
Expose ProtocolNacks properly.
Fix race condition resulting in duplicate messages.
Don't allow duplicate listeners.
Don't register player automatically.
Partially specify game state update notification protocol.
Shohorn parent class into game state change event hierarchy.
Javadoc.
Game client state notification handling.
Add missing annotation.
Add primitive game client outbound command/notification handling.
Extend sequence number width to long.
Remove unused imports.
Handle player deregistration on server.
Fix missing fall-through.
Propagate game state notifications to the clients.