Autoscroller is currently rather heavy and could be improved by:
. Making it a singleton thereby reducing a JComponent field and indirectly
  sharing the Timer that was contained in it.
. Rather than have Autoscroller implement MouseListener JComponent should
  forward the mouse released event, thereby making it unnecessary for
  Autoscroller to implement MouseListener and be added as a MouseListener.
. Make Autoscroller implement ActionListener instead of using an anonymous
  inner class.