title: Dom-Repeat Render: What is it actually do? Proper way to tell dom-repeat re-render its item?
body: <p>I was fighting with a nested dom-repeat for the last 2 days.<br>
  I somewhat now know how to re-render when sub-properties changed.  </p>
  
  <p>But still don't understand the purpose of the render function.
  I changed the data binded to a dom-repeat, and call the render, but nothing happens.</p>
  
  <pre><code>_renderDREmployees: function() {
    this.employees[0].name="RENDERED"
    // Why this doesn't work ?
    this.$.drEmployees.render()
  },
  </code></pre>
  
  <p>See here
  <a href="http://plnkr.co/edit/Y0P5vNxg46t5fX7gJFxU?p=preview" rel="nofollow">http://plnkr.co/edit/Y0P5vNxg46t5fX7gJFxU?p=preview</a></p>
  
  <p>Could somebody explain to me please?</p>
  
  <p>If you could take a look of my example, to see if I do it the right away.
  What could be other ways/proper way to re-render item inside a dom-repeat when the data that binded to it was changed outside.</p>
  
  <p>Thank you</p>