tracks/ocaml/exercises/prime-factors/example.ml in trackler-2.1.0.21 vs tracks/ocaml/exercises/prime-factors/example.ml in trackler-2.1.0.22

@@ -1,5 +1,5 @@
-open Core.Std
+open Core
 
 let square_root_trunc n =
     (* Square root is not defined on int64 but it is on big_int *)
     let open Big_int in
     big_int_of_int64 n |> sqrt_big_int |> int64_of_big_int