Sync typeshed (#3212)

gvanrossum · web-flow · commit 1d1c62dc9885 · 2017-04-21T13:25:53.000-07:00
diff --git a/typeshed b/typeshed
@@ -1 +1 @@
-Subproject commit 8b835f95001b61734c6b147d3aa6eb4fbe7bce03
+Subproject commit a934d57f3bb03ee62b882a055e655521f6608769
