Import python3 compatible object.

evennia/typeclasses/attributes.py

@@ -8,6 +8,7 @@ which is a non-db version of Attributes.
 
 
 """
+from builtins import object
 import re
 import weakref
 

evennia/typeclasses/models.py

@@ -25,6 +25,7 @@ This module also contains the Managers for the respective models; inherit from
 these to create custom managers.
 
 """
+from builtins import object
 
 from django.db.models import signals
 

evennia/typeclasses/tags.py

@@ -9,6 +9,7 @@ used for storing Aliases and Permissions. This module contains the
 respective handlers.
 
 """
+from builtins import object
 
 from django.conf import settings
 from django.db import models