title: How to check what props changed in componentWillReceiveProps
body: <p>Is there a way to check what props changed (without storing old props elsewhere) inside <code>componentWillReceiveProps</code> ?</p>
  
  <p>i.e.</p>
  
  <pre><code>componentWillReceiveProps (newProps) {
    if( /* newProps.profileImage is different to previous props */ ) /* do stuff */
  }
  </code></pre>