title: matplotlib: adding padding/offset to polar plots tick labels
body: <p>Is there a way to increase the padding/offset of the polar plot tick labels (theta)?</p>
  
  <pre><code>import matplotlib
  import numpy as np
  from matplotlib.pyplot import figure, show, grid
  
  # make a square figure
  fig = figure(figsize=(2, 2))
  ax = fig.add_axes([0.1, 0.1, 0.8, 0.8], polar=True, axisbg='#d5de9c')
  ax.set_yticklabels([])
  
  r = np.arange(0, 3.0, 0.01)
  theta = 2*np.pi*r
  ax.plot(theta, r, color='#ee8d18', lw=3)
  ax.set_rmax(2.0)
  show()
  </code></pre>
  
  <p>I'd like to have theta tick labels further away from the polar plot so they don't overlap.</p>
  
  <p><img src="https://i.stack.imgur.com/kSXOQ.png" alt="enter image description here"></p>