lorchess.ru/_assets/vendor/bootstrap/docs/_includes/nav-migration.html

<li>
  <a href="#classes">Major class changes</a>
</li>
<li>
  <a href="#new">What's new</a>
</li>
<li>
  <a href="#dropped">What's removed</a>
</li>
<li>
  <a href="#notes">Additional notes</a>
</li>