message: Use packed parameter call in Window::onMouseMove
diff: @@ -75,7 +75,7 @@ void Window::onMouseMove(int /*x*/, int /*y*/, int dX, int dY)
  if (mMouseDrag && !mAnchored)
  {
  - position(positionX() + dX, positionY() + dY);
  + position(position() + NAS2D::Vector{dX, dY});
  }
  }
  