+UPDATING FROM PREVIOUS VERSION
+===============================
+
+I introduced south for DB schema migration. The schema from any previous version without south is 0001_initial.
+You will get an error:
+
+ ``Running migrations for cas_provider:``
+
+ ``- Migrating forwards to 0001_initial.``
+
+ ``> cas_provider:0001_initial``
+
+ ``Traceback (most recent call last):``
+
+ ``...``
+
+ ``django.db.utils.DatabaseError: relation "cas_provider_serviceticket" already exists``
+
+to circumvent that problem you will need to fake the initial migration:
+
+ python manage.py migrate cas_provider 0001_initial --fake
+
+