Merge pull request #4 from cloudflare/celso/oneOf-fix

adds changelog

Author: celso

package.json

@@ -24,7 +24,8 @@
   "files": [
     "dist",
     "LICENSE",
-    "README.md"
+    "README.md",
+    "CHANGELOG.md"
   ],
   "repository": {
     "type": "git",