title: How to make `where not` case?
body: <p>I need where but with <strong>not</strong> case. For example, I would like to find plays, which have no name "Shakespeare":</p>
  
  <pre><code>_.where(listOfPlays, {author: !"Shakespeare", year: 1611});
                                ^^^^^^^^^^^^^
                              NOT Shakespeare
  </code></pre>
  
  <p>How can I do it with <code>underscore</code>?</p>