title: How to limit number of displayed tags in select2?
body: <p>I need to limit the number of displayed selected tags. Please notice that I do not want to restrict the maximum number of selected tags. So a user should be able to select as many options as he wants but I want to have control over how selected tags are displayed. </p>
  
  <p>For example, I might want to just show a text like: <code>5 items are selected</code>.
  I tried to use <code>templateSelection</code> config parameter but this function is called per selected option so I cannot return a single label for multiple selected options.</p>
  
  <p>Also I found <a href="https://stackoverflow.com/questions/37786092/change-select2-to-display-n-of-m-items-selected">this</a> answer but it's not working(setting the html inside change callback does not anything) and it seems more like a hack. </p>
  
  <p>Is there some built-in or better way to achieve it?</p>