title: Remove html attribute in production build
body: <p>In order to be able to write Selenium test cases for our Webpack built React app we've added data-* attributes to certain parts of the HTML elements, example:</p>
  
  <pre><code>&lt;div class="Component__item___2jdnc" data-app-feature="example-id"&gt;&lt;/div&gt;
  </code></pre>
  
  <p>We can use these to locate elements to interact with and assert on. But, in production environment I would like to have them removed. How could that be achieved?</p>