Merge pull request psychopy#6784 from TEParsons/dev-enh-liaison-log

ENH: Log all messages received by Liaison

psychopy/liaison.py

@@ -329,6 +329,10 @@ async def _processMessage(self, websocket, message):
 		message : string
 			the message sent by the client to the server, as a JSON string
 		"""
+		# log message
+		self._logger.debug(
+			f"Liaison received message: {message}"
+		)
 		# decode the message:
 		try:
 			decodedMessage = json.loads(message)