title: How to load new events into FullCalendar
body: <p>I am using FullCalendar 3.2. The problem is if I get the current events from calender and clear then add new ones to array. When I call </p>
  
  <pre><code>$('#calendar').fullCalendar( 'updateEvents',eventsList);
  </code></pre>
  
  <p>It does not work but throws error</p>
  
  <pre><code>Uncaught TypeError: Cannot read property 'clone' of undefined
      at Y (fullcalendar.min.js:6)
      at Bt.x [as updateEvents] (fullcalendar.min.js:6)
      at HTMLDivElement.&lt;anonymous&gt; (fullcalendar.min.js:6)
  </code></pre>
  
  <p>This is the code inside the button click handler</p>
  
  <pre><code>var items = $('#calendar').fullCalendar( 'clientEvents');
  items.splice(0, items.length);
  items.push({
              title: 'All Day Event',
              start: '2017-02-01'
              });
  items.push({
              title: 'Long Event',
              start: '2017-02-07',
              end: '2017-02-10'
              });
  $('#calendar').fullCalendar( 'updateEvents',items);
  </code></pre>
  
  <p>I have tried to use jquery version 2.2.4 and 3.1.1 but no luck</p>
  
  <pre><code>&lt;link rel="stylesheet" href="resources/css/default.css"&gt;
  &lt;link rel='stylesheet' href='resources/css/fullcalendar.css' /&gt;
  &lt;script src='resources/js/jquery-3.1.1.min.js'&gt;&lt;/script&gt;
  &lt;script src='resources/js/moment-with-locales.min.js'&gt;&lt;/script&gt;
  &lt;script src='resources/js/fullcalendar.js'&gt;&lt;/script&gt;
  </code></pre>