title: Vuejs2: How to re-render array computed properties when array changed
body: <p>I have array named List and created computed property computedList for him.
  When i update value of array it's not showing in html, but in console i see thar array is updated.</p>
  
  <pre><code>`https://jsfiddle.net/apokjqxx/69/`   
  </code></pre>
  
  <p>What is best way to use computed properties for array?</p>
  
  <p>Maybe is exists way to trigger to re-render computed property?</p>