Do not ratelimit the tag-changes endpoint (#743)

This endpoint recieves a large volume of requests (one for each new changeset)
from a single admin user account. Rate-limiting it will cause tag-changes data
to stop being ingested during periods when there are lots of edits happening
in OSM, which isn't desirable.

osmchadjango/changeset/views.py

@@ -698,6 +698,7 @@ def filter_primary_tags(feature):
 class SetChangesetTagChangesAPIView(ModelViewSet):
     queryset = Changeset.objects.all()
     permission_classes = (IsAdminUser,)
+    throttle_classes = [] # do not rate limit the tag changes endpoint
     # The serializer is not used in this view. It's here only to avoid errors
     # in docs schema generation.
     serializer_class = ChangesetStatsSerializer