title: "load_breast_cancer" could not be loaded for iPython notebook
body: <p>I tried to run <code>from sklearn.datasets import load_breast_cancer</code> on my iPython notebook (Python 2, Jupyter, Dato), and got the importError:</p>
  
  <pre><code>ImportError                               Traceback (most recent call last)
  &lt;ipython-input-12-09d44d891711&gt; in &lt;module&gt;()
  ----&gt; 1 from sklearn.datasets import load_breast_cancer
  
  ImportError: cannot import name load_breast_cancer
  </code></pre>
  
  <p>But it works fine if I run others, e.g. <code>from sklearn.datasets import load_diabetes</code>, <code>from sklearn.datasets import load_boston</code>.</p>
  
  <p>So how to import the <code>load_breast_cancer</code>? Thank you.</p>