Initial chekin post-discontinuity.

typehints/msgpack.pyi

@@ -0,0 +1,4 @@
+from typing import Any, Callable, Dict
+
+def packb(o: Any, use_bin_type: bool, default: Callable) -> bytes: ...
+def unpackb(data: bytes, raw: bool, object_hook: Callable) -> Dict: ...

typehints/nltk.pyi

@@ -0,0 +1,4 @@
+from typing import Iterator
+
+def sent_tokenize(sent: str) -> Iterator[str]: ...
+def word_tokenize(word: str) -> Iterator[str]: ...