Fix Py2 hashlib.new arg type (#157)

stdlib/2.7/hashlib.pyi

@@ -11,7 +11,7 @@ class _hash(object):
     def hexdigest(self) -> str: ...
     def copy(self) -> _hash: ...
 
-def new(algo: str = ...) -> _hash: ...
+def new(name: str, data: str = ...) -> _hash: ...
 
 def md5(s: str = ...) -> _hash: ...
 def sha1(s: str = ...) -> _hash: ...