+The storage scheme of ``BytesDAWG`` and ``RecordDAWG`` is changed in
+this release in order to provide the alphabetical ordering of items.
+This is a backwards-incompatible release. In order to read ``BytesDAWG`` or
+``RecordDAWG`` created with previous versions of DAWG use ``payload_separator``
+ >>> BytesDAWG(payload_separator=b'\xff').load('old.dawg')