Unable to change port using listen method

The listen method does not seem to change the current port. Please see below for a code snippet where I try to change a port with the changePort method. If ```defaut=True```, I get this error:

```RuntimeError: Only one default socket authorized! Please set default=False to other calls to listen()```

And, if ```defaut=False```, I just stop receiving messages on the port. Is this a sort of bug, or is there a right way to change port with OSCpy?

OS: macOS 12.6.6
Python: 3.9.16
OSCpy: 0.6.0

```python
from oscpy.server import OSCThreadServer

SERVER_ADDRESS = "127.0.0.1"
PORT = 3000
OSC_ADDRESS = b"/testAddress"

class OSCTest:
def __init__(self):
self.server = OSCThreadServer()
self.socket = self.server.listen(address=SERVER_ADDRESS,
port=PORT, default=True)
self.server.bind(OSC_ADDRESS, self.handler)

def handler(self, *data):
print(data)

def close(self):
self.server.stop(self.socket)

def changePort(self, newPort):
"""Change the server port to a newPort."""
# Close the current port
self.server.stop(self.socket)
# Listen on the new port
self.socket = self.server.listen(address=SERVER_ADDRESS,
port=newPort, default=False)
# Re-bind the server to handle incoming OSC messages
self.server.bind(OSC_ADDRESS, self.handler)

```

Start by reading the OSCThreadServer.listen(), stop(), and bind() implementations, then run the supplied Python snippet with both default values. Done means determining whether the documented port-change sequence works and, if not, reproducing the failure with a focused test or a clear correction path.

Written by the indexing model from the issue text.