Add unidata_version. Bump generator version number.
diff --git a/Objects/unicodetype_db.h b/Objects/unicodetype_db.h
index 338b6b4..45ffa93 100644
--- a/Objects/unicodetype_db.h
+++ b/Objects/unicodetype_db.h
@@ -1,4 +1,4 @@
-/* this file was generated by Tools/unicode/makeunicodedata.py 2.1 */
+/* this file was generated by Tools/unicode/makeunicodedata.py 2.2 */
 
 /* a list of unique character type descriptors */
 const _PyUnicode_TypeRecord _PyUnicode_TypeRecords[] = {