Dropdown disable caret

Sometimes is needed to change standard dropdown caret icon and no easy way to do it up to this point.

Menu item 1 Menu item 2 Menu item 3 
<!-- Source -->
<div class="btn-group dropdown">
  <button class="btn btn-secondary dropdown-toggle disable-caret" type="button" data-toggle="dropdown">Dropdown</button>
  <div class="dropdown-menu"></div>
</div>