0.4.0

• enable child bridge mode by providing a path (absolute) to a configuration file:
  Example in the config file (e.g. in Homebridge GUI):

    "platforms": [
        {
            "name": "Config",
            "port": 8581,
            "platform": "config"
        },
        {
            "name": "KNX",
            "platform": "KNX",
            "config_path": "/home/pi/homebridge/some-knx_config.json"
        },
        {
            "name": "KNX",
            "platform": "KNX",
            "config_path": "/home/pi/homebridge/another-knx_config.json",
            "_bridge": {
                "username": "0E:0B:9B:24:17:00",
                "port": 51490
            }
        }
    ]

• quite a while back @jendrik found some issues and fixed them. They have been in the master branch ever since but not properly honored or published in a release.