fix formatting

Author: jensbjorgensen

test/test_case.py

@@ -135,5 +135,6 @@ def test_match():
 def test_unicode():
     assert unpackb(packb("foobar"), use_list=1) == "foobar"
 
+
 def test_dict_tuple_key():
     unpackb(packb({(1, 2): 3}), strict_map_key=False)