title: Attempted import error: 'CardAction' is not exported from '@material-ui/core'
body: <p>I'm working on a react app and I'm trying to import CardAction from @material-ui but then:</p>
  <pre><code>Attempted import error: 'CardAction' is not exported from '@material-ui/core'.
  </code></pre>
  <p>So obviously I went to Stackoverflow and I have a question:</p>
  <p>Is CardAction only available in material-ui v5 and if so how do I install it?</p>
  <p>Thank you!</p>