title: Removing only certain associations of many-to-many in Django
body: <p>I have a many to many relationship between tags and restaurants. What I want to do is remove the association between the two given a list of tags.</p>
  
  <p>For example, say <code>restaurant.tags.all()</code> produces these tags: ['t1', 't2', 't3', 't4', 't5']</p>
  
  <p>Is there a way I can do restaurants.tags.remove??(['t2','t4']) so that the results of <code>restaurant.tags.all()</code> is now: ['t1', 't3', 't5'] ?</p>