title: module 'skimage.filters' has no attribute 'gaussian_filter'
body: <p>I'm trying to run <a href="https://gist.github.com/leonidk/8798fdbf38db120b8536d25ea2f8c3b4" rel="nofollow noreferrer">this example</a>, but getting the following error:</p>
  
  <pre><code>AttributeError: module 'skimage.filters' has no attribute 'gaussian_filter'
  </code></pre>
  
  <p>I checked the documentation, <a href="http://scikit-image.org/docs/0.12.x/api/skimage.filters.html#skimage.filters.gaussian_filter" rel="nofollow noreferrer">here</a>, and see that <code>filters</code> has <code>gaussian_filter</code>. What might be wrong?</p>
  
  <p>Thanks.</p>