title: How do you generate a blur or onBlur event in Enzyme?
body: <p>I've tried:</p>
  
  <pre><code>input.simulate('blur');
  </code></pre>
  
  <p>and </p>
  
  <pre><code>input.simulate('onBlur');
  </code></pre>
  
  <p>None of these work. Is this even available in Enzyme (I'm using version 2.4.1). </p>