title: Dynamic search/filter core-list (Polymer 0.5)
body: <p>I need to implement a filter-type search which hides items in core list if they do not match the search.  I created a .hidden class that is applied to an item if an expression returns false:</p>
  
  <p><code>class = {{ {hidden: !match(model.host, hQuery)} | tokenList }}</code></p>
  
  <p>The elements are hidden, but the list does not reflow elements unless I click on a visible row.  Is there a way to force a reflow using a function call?</p>
  
  <p><img src="https://i.stack.imgur.com/ROZq6.png" alt="Blank">
  <img src="https://i.stack.imgur.com/q9lbv.png" alt="With Filter">
  <img src="https://i.stack.imgur.com/ut1bH.png" alt="After Click"></p>