title: How to connect two state circles with an arrow in tkinter?
body: <p>I am currently writing a fsm editor with tkinter. But, I stuck on connecting two states. I have two questions:</p>
  
  <p>1) How can make the transition arrow growable according to mouse movement?</p>
  
  <p>2) How can I stick the starting point of the arrow on a state and the end point of the arrow on another state?</p>
  
  <p>PS. Do you think the documentation of tkinter is good enough?</p>