title: Delete all associations from duplicated object
body: <p>When duplicating an object with <code>object_dup = object.dup</code>, all associations are copied. </p>
  
  <pre><code>object_dup.foos == object.foos
  </code></pre>
  
  <p>I would like to duplicate/clone <code>object</code> without its associations, or delete the associations all after duplication. I would like to destroy all duplicated associations on <code>object_dup</code>. It might be easier to just create a new object, but duplication saves me from property-setting-hell.</p>
  
  <p>Is that possible?</p>