title: How to check if there was any change in a Formik form?
body: <p>I have a page with a form and, if the &quot;return&quot; button is pressed, I need to show a dialog asking the user if he wants to save the form only if the form has changed.</p>
  <p>Is there a way to easily check if the form has changed without having to compare every individual field to the <code>initialValues</code> object?</p>