title: Aggregate Items in Cart with Cartthrob/ExpressionEngine
body: <p>When I add one item with a quantity of let's say 3 to the cart using</p>
  
  <pre><code>exp:cartthrob:add_to_cart_form
  </code></pre>
  
  <p>and then show the content of the cart using </p>
  
  <pre><code>{exp:cartthrob:cart_items_info}
  </code></pre>
  
  <p>I get 3 rows with the same item.</p>
  
  <p>Is there a way to tell Cartthrob to aggregate the items and show one row with the quantity=3?</p>
  
  <p>PS: The items do have individual item options. I was wondering if this is the reason CT displays them on separated rows.</p>