For 0.10.0
- Implement all the DBus properties in the docs/ directory.
- OBD2 add support for AT/ST calls (ie, atrv for battery voltage)
- OBD2 if NO DATA is received for all requests, go into optional autoreconnect mode
- fill in the fromGVariant() methods in list and map abstract property types.
- Clean up sink subscription process so that subscription only happens once regardless of whether the 
  property is supported or not at the time
- DBus support for time and sequece being included in dbus properties.
- DBus support for objects with multiple sources and multiple 'zones' (ie /org/automotive/${sourceID}/${zone}/batteryVoltage/${index})
- Document changes to the DBus API

- investigate why websocketsink plugin constantly gets disconnected when using eth0


Other:
- grep all the TODOs in the code and do them
- per-source property filtering in routing engine
- improve obd2source speed via Physical Addressing (see https://www.scantool.net/forum/index.php?topic=6661.msg25024#msg25024)
- investigate and enable use of provisioning in ssl websockets
- add API to get number of sources per a given property (ie uint AbstractRoutingEngine::sources(VehicleProperty::Property))
- enable ambd/config.d/
- finish implementing openxc plugin