in_stream = models.BooleanField(_('in stream'), default=True)
categories = models.ManyToManyField(Category, null=True, blank=True, verbose_name=_('categories'))
first_published_at = models.DateTimeField(_('published at'), null=True, blank=True)
+ canonical_url = models.URLField(_('canonical link'), null = True, blank = True)
objects = models.Manager()
published_objects = PublishedEntryManager()