title: How to close gap between python contour plot and colorbar
body: <p>I have made a contour plot and set plt.axis = 'square'. This has caused a significant gap between the plot and the color bar. I have been struggling to find a way to close this gap. How can you choose the distance between a contour plot and its color bar? How can you close this gap up to the point that they are touching?</p>
  <pre><code>import matplotlib.pyplot as plt
  import matplotlib.ticker as ticker
  data = [[1,2,3,4,5,6,7,8,9,10],[1,2,3,4,5,6,7,8,9,10]]
  plt.contourf(data)
  plt.colorbar()
  plt.xlabel('y label')
  plt.ylabel('x label')
  plt.axis('square')
  </code></pre>