title: Share x-axis between Bokeh plots
body: <p>In matplotlib you can share the x-axis between plots like so:</p>
  
  <pre><code>plt.subplots(nrows=2, sharex=True)
  </code></pre>
  
  <p>I would like to do something similar in Bokeh, where I zoom one, the other will follow, etc. How would I do that in Bokeh?</p>