title: Preventing Deletion with django-simple-history
body: <p>I started using django-simple-history in order to keep the history but when I delete an object (from admin page at least) I notice that it is gone for good.</p>
  
  <p>I suppose I could create tags and "hide" objects instead of deleting in my views but would be nice if there is an easier way with django-simple-history, which would also cover admin operations.</p>