title: Animating jsplumb line
body: <p>Is there any way to animate jsplumb connecting lines as they are being drawn? I want to have an animation, instead of just a line appearing. </p>
  
  <p>I call <code>jsPlumb.connect</code> to draw the line upon clicking a div, like this </p>
  
  <pre><code>$("#manchester").on('click', function() {
      jsPlumb.connect({source: "manchester", target: "paris"});
  });
  </code></pre>