title: xlabels do not show up with seaborn and tight despined layout in python
body: <p>I would like to plot the following dataframe with xtick labels rotated while also having a tight, despined layout (using <code>tight_layout()</code> from matplotlib and <code>despine</code> from seaborn). the following does not work because the labels do not show up:</p>
  
  <pre><code>import matplotlib.pylab as plt
  import seaborn as sns
  import pandas
  df = pandas.DataFrame({"x": ["XYZ1", "XYZ2", "XYZ3", "XYZ4"],
                         "y": [0, 1, 0, 1]})
  plt.figure(figsize=(5,5))
  sns.set_style("ticks")
  g = sns.pointplot(x="x", y="y", data=df)
  sns.despine(trim=True, offset=2)
  g.set_xticklabels(g.get_xticklabels(), rotation=55, ha="center")
  plt.tight_layout()
  </code></pre>
  
  <p>it produces:</p>
  
  <p><a href="https://i.stack.imgur.com/2aWKs.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/2aWKs.png" alt="enter image description here"></a></p>
  
  <p>the xtick labels ("XYZ1", "XYZ2", ...) do not appear. if i remove despine the ticks appear but then not despined. if i change ticks before despine/tight_layout, they appear but are not rotated. how can this be done? </p>