CHANGELOG.md in second_level_cache-2.1.14 vs CHANGELOG.md in second_level_cache-2.1.15

@@ -1,4 +1,7 @@
+2.1.15
+* Replace Fixnum class check for Integer class
+
 2.1.14
 * support has_one with scope
 
 2.1.10
 * read multi from cache for find(ids)