tracks/ocaml/exercises/word-count/word_count.mli in trackler-2.2.1.110 vs tracks/ocaml/exercises/word-count/word_count.mli in trackler-2.2.1.111

@@ -1,5 +1,5 @@
-open Core
+open Core_kernel
 
 (**
  * Count occurences of words (consisting of letters and numbers) in the string.
  *
  * Words will be converted to lower case before comparison and insertion in the