title: tqdm_notebook description is truncated
body: <p>I am using <code>tqdm_notebook</code> to show progress, and update the description to track the loss with the number of iterations.  How can I make the description not be truncated (an image attached below).</p>
  
  <p>I define <code>ebar = tqdm_notebook(range(NUM_EPOCHS))</code> and update the description using:</p>
  
  <pre><code>ebar.set_description('c_loss: {:.5f}, r_loss: {:.5f}, v_loss: {:.5F}'.format(av_class_loss,
                                                                               av_recon_loss,
                                                                               av_valid_loss))
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/ENCi3.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ENCi3.png" alt="enter image description here"></a></p>