feat: Updated MANIFEST.in

MANIFEST.in

@@ -3,6 +3,7 @@ include benchmark/dcvgr10.txt.gz
 include benchmark/reuters21578.txt.gz
 include tests/english-words.10.gz
 recursive-include tests *.txt *.py
+include tests/test_jieba.py
 recursive-include benchmark *.txt *.py
 recursive-include docs *.txt *.py *.rst
 recursive-include files *.txt *.py *.png *.jpg *.svg