title: mixitup counting visible items on initial start after page loading
body: <p>I am playing with <a href="https://mixitup.kunkalabs.com" rel="nofollow noreferrer">mixitup</a> to sort items.</p>
  
  <p>I can count items visible after I press a sort or filter buttons:</p>
  
  <pre><code>$('#collection').on('mixEnd', function(e, state){
      var countvisible = $("#container&gt; tr[style='']").length;
      console.log('Sorted! ' + countvisible );
  
      $('#current_count').text(countvisible);
  });
  </code></pre>
  
  <h2>What I need: get a count of visible items on page load</h2>
  
  <p>but the `on('mixEnd') does NOT ignite during the initialization of the mixitup on page load.</p>
  
  <p>How to do it? I can just use <code>on PageLoad</code> sit some delay, but it doesn't seem as a good practice. </p>
  
  <p>Any help appreciated.</p>