Sync typeshed (#5086)

Michael0x2a · web-flow · commit 22ee7137a5f2 · 2018-05-20T12:13:41.000-07:00
This time mostly to incorporate python/typeshed#2150.
diff --git a/typeshed b/typeshed
@@ -1 +1 @@
-Subproject commit f7f00c52af249a0a305908ba6a0016ce25d4064e
+Subproject commit 709b193416afdcc2985c65f5f558e49eb38fdba5
