title: Linebreaks in pandas column names
body: <p>Do you know how to do linebreaks inside pandas column names? I have some columns with long labels and I want to break them when I display the dataframe. Something like this doesnt seem to work.</p>
  
  <pre><code>pd.DataFrame({'this is \n colummn A':[1,2,3], 'this is \n colummn B':[3,4,5]})
  
  
      this is colummn A   this is colummn B
  0   1                   3
  1   2                   4
  2   3                   5
  </code></pre>