Set when the server asked us to reconnect (by way of a RECONNECT event).
Set when the user explicitly asked to re-exec in the middle of a session.
How many times the program has reexecuted itself.
Cached PONG string to send to the server, so we don't have to concatenate a new one each time.
Set when we have sent a QUIT message to the server.
Set when an RPL_WELCOME event was encountered.
When this is set, the main loop should print a connection summary upon the next iteration.
Set when the Socket read timeout was requested to be shortened.
Transient state variables, aggregated in a struct.