Provide simple support for fetching entries in AMP format - can't handle images yet and needs some other tweaks, but works nicely so far c:

entries/models.py

@@ -140,6 +140,14 @@ class Entry(ModelMeta, TimeStampedModel):
             args.append(self.slug)
         return reverse('entries:' + kind.entry, args=args)
 
+    @property
+    def amp_url(self):
+        kind = kinds.from_id[self.kind]
+        args = [self.id]
+        if kind.slug:
+            args.append(self.slug)
+        return reverse('entries:' + kind.entry_amp, args=args)
+
     @property
     def slug(self):
         return slugify(self.name)