title: UUID('...') is not JSON serializable
body: <p>I get this error when i try to pass the UUID attribute to url parameter.</p>
  
  <pre><code>urlpatterns = [
      url(r'^historia-clinica/(?P&lt;uuid&gt;[W\d\-]+)/$', ClinicHistoryDetail.as_view(), name='...'),
  ]
  </code></pre>
  
  <p>views.py</p>
  
  <pre><code>class ClinicHistoryDetail(...):
       ...
       my_object = MyModel.objects.create(...)
       ...
       return redirect(reverse('namespace:name', kwargs={'uuid' : my_object.id}))
  </code></pre>
  
  <p>model.py</p>
  
  <pre><code>class MyModel(models.Model):
      id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
      ...
  </code></pre>
  
  <p>Any suggestions?</p>