Use serial_for_url for serial port, allowing rfc2217

Author: xouillet

__init__.py

@@ -127,8 +127,8 @@ def _open_serial(self):
         Create (and open) the serial connection.
         """
         try:
-            self._reader = serial.Serial(
-                port=self._port,
+            self._reader = serial.serial_for_url(
+                url=self._port,
                 baudrate=self._baudrate,
                 bytesize=BYTESIZE,
                 parity=PARITY,