title: tablesorter filtering a date format dd-mm-yyyy
body: <p>I am using tablesorter to display date and I want the format of <code>dd-mm-yyyy</code> and I have this list of date.</p>
  
  <pre><code>Start Date
  ----------
  08-05-2015
  05-12-2015
  24-07-2015
  15-06-2015
  17-05-2015
  </code></pre>
  
  <p>but when I sort it it will look like this form big to low value.</p>
  
  <pre><code>Start Date
  ----------
  24-07-2015
  17-05-2015
  15-06-2015
  08-05-2015
  05-12-2015
  </code></pre>
  
  <p>is it possible that it will look like this?</p>
  
  <pre><code>Start Date
  ----------
  05-12-2015
  24-07-2015
  15-06-2015
  17-05-2015
  08-05-2015
  </code></pre>
  
  <p>it can be ordered when I change the date forma into <code>mm-dd-yyyy</code> but is it possible for <code>dd-mm-yyyy</code> ?</p>
  
  <p>I tried this code but seems nothing happen</p>
  
  <pre><code>$('#mytable').tablesorter({
     sortList: [[0,0],[2,0]], 
     dateFormat : 'dd-mm-yyyy',
  });
  </code></pre>