tracks/ocaml/exercises/bracket-push/example.ml in trackler-2.1.0.21 vs tracks/ocaml/exercises/bracket-push/example.ml in trackler-2.1.0.22

@@ -1,5 +1,5 @@
-open Core.Std
+open Core
 
 type 'a stack = 'a list
 
 let push (s: 'a stack) (a: 'a): 'a stack = a :: s
 let pop (s: 'a stack): ('a * 'a stack) option = match s with