title: AttributeError: module 'pygal' has no attribute 'Worldmap'
body: <p>I'm trying to: </p>
  
  <pre><code>import pygal
  wm = pygal.Worldmap()
  </code></pre>
  
  <p>but it raises:</p>
  
  <pre><code>AttributeError: module 'pygal' has no attribute 'Worldmap'
  </code></pre>
  
  <p>Can anyone tell me what the problem is?</p>