- PyObjCTools.KeyValueCoding has undocumented attributes 'ArrayOperators' and 'arrayOperators',
both will be removed in a future release.
+- Using NSArchiver or NSKeyedArchiver to encode and then decode a python list or tuple could
+ result in an unexpected value. In particular, if any element of the sequence was :data:`None`
+ before archiving it would by ``NSNull.null()`` when read back.