message: Supported elevation style prop
  Tried setElevation instead of setCompatElevation but shadow disappeared after pressing button (elevation reset)!?
diff: @@ -113,6 +113,11 @@ public class FloatingActionButtonManager extends SimpleViewManager<FloatingActio
  requestCoordinatorLayout(view);
  }
  + @ReactProp(name = "elevation")
  + public void setElevation(FloatingActionButtonView view, int elevation) {
  + view.setCompatElevation(PixelUtil.toPixelFromDIP(elevation));
  + }
  +
  @ReactProp(name = "contentDescription")
  public void setContentDescription(FloatingActionButtonView view, String contentDescription) {
  view.setContentDescription(contentDescription);
  