:art: Digit separators

diff --git a/ast b/ast
index 8fdf56e0aabe91bcaded35c38d036e81a3a34432..201d9dda93302a6a23a7ffd01258cb40abb94445 160000 (submodule)
--- a/ast
+++ b/ast
@@ -1 +1 @@
-Subproject commit 8fdf56e0aabe91bcaded35c38d036e81a3a34432
+Subproject commit 201d9dda93302a6a23a7ffd01258cb40abb94445