title: Swift MacOS SpriteKit rightMouseDragged not working
body: <p>I have a NSViewController/NSView with a SpriteKit Scene filling the whole view.  Here are the events I need to handle:</p>
  
  <pre><code>override func mouseDown(with event: NSEvent) {
  override func rightMouseDown(with event: NSEvent) {
  override func otherMouseDown(with event: NSEvent) {
  override func mouseDragged(with event: NSEvent) {
  override func rightMouseDragged(with event: NSEvent) {
  override func otherMouseDragged(with event: NSEvent) {
  </code></pre>
  
  <p>But they are very inconsistent, and I'm not able to get rightMouseDragged working at all.</p>
  
  <pre><code>mouseDown works fine in the SKScene
  rightMouseDown works fine in the SKScene
  otherMouseDown had to be implemented in the viewController and passed on to the scene
  mouseDragged worked fine in the SKScene
  rightMouseDragged is not working at all
  otherMouseDragged had to be implemented in the viewController and passed on to the scene
  </code></pre>
  
  <p>My main need is to fix rightMouseDragged.  It doesn't receive any dragged events either in the view controller or the scene controller.</p>