1 - Server/Client - to suport receive the original Buffer objects, now 'options' parameter have the new properties 'read_encoding' (default to buffer) and 'write_encoding' (default to ascii)
2 - Client - method 'end' was removed, 'send' suports close the connection "send(message_to_send, [close_connection], [callback])", close_connection default to false
3 - PortScan - change to suport the new features from Client