Merge branch 'master' into master

Author: rxmarbles

package-lock.json

@@ -35,7 +35,7 @@
   },
   "homepage": "https://github.com/okonet/attr-accept#readme",
   "dependencies": {
-    "core-js": "1.2.2"
+    "core-js": "^2.5.0"
   },
   "devDependencies": {
     "babel-core": "^6.26.0",