Update-objs with prototype, first version, no testing yet

evennia/typeclasses/attributes.py

@@ -435,6 +435,7 @@ class AttributeHandler(object):
             def __init__(self):
                 self.key = None
                 self.value = default
+                self.category = None
                 self.strvalue = str(default) if default is not None else None
 
         ret = []