Add ability to enable debug logging by commandline argument

ycast/__main__.py

@@ -14,7 +14,11 @@ def launch_server():
     parser.add_argument('-c', action='store', dest='config', help='Station configuration', default=None)
     parser.add_argument('-l', action='store', dest='address', help='Listen address', default='0.0.0.0')
     parser.add_argument('-p', action='store', dest='port', type=int, help='Listen port', default=80)
+    parser.add_argument('-d', action='store_true', dest='debug', help='Enable debug logging')
     arguments = parser.parse_args()
+    if arguments.debug:
+        logging.getLogger().setLevel(logging.DEBUG)
+        logging.debug("Debug logging enabled")
     logging.info("YCast server starting on %s:%s" % (arguments.address, arguments.port))
     server.run(arguments.config, arguments.address, arguments.port)