title: Exclude a column from being sorted using jQuery tablesorter
body: <p>I am looking for a way to exclude a single column from being sorted using jQuery's tablesorter plugin. Specifically, I have a fairly large table and would like to keep a "row number" column fixed so that it is easy to see what position in the table a particular row is, after sorting.</p>
  
  <p>For example:</p>
  
  <pre><code>#    name
  -----------
  1    papaya
  2    apple
  3    strawberry
  4    banana
  </code></pre>
  
  <p>When sorted on the name column, should result in:</p>
  
  <pre><code>#    name
  -----------
  1    apple
  2    banana
  3    papaya
  4    strawberry
  </code></pre>
  
  <p>Thanks.</p>