XEP-0198 reconnect: quickShutdown instead of disconnect
hack: try to re-connect in ping handler
XEP-0198: only wait for SM if resume is possible
stanza count starts at 0
remove seldomly code
improve ConnectionStates
consolidate ping-pong registration with new SmackableImp flow
notification sound: do not crash when silent
connectivity change: no duplicate connections
Create 'random' resource postfix on initial setup