MyLocationLayer: move viewing-direction indicator below MyLocation feature (#1019)
MyLocationLayer: move viewing-direction indicator below MyLocation feature (#1019)

* this looks better than having it above
* plus, it is displayed in this way also in other apps
  (e.g. Google Maps and OsmAnd)

charlenni/Mapsui,charlenni/Mapsui,pauldendulk/Mapsui