Merge pull request #143 from arangodb/greenkeeper-core-js-2.0.3

Update core-js to version 2.0.3

Author: pluma

package.json

@@ -54,7 +54,7 @@
     "babelify": "6.4.0",
     "browserify": "13.0.0",
     "chai": "3.4.1",
-    "core-js": "2.0.2",
+    "core-js": "2.0.3",
     "coveralls": "2.11.6",
     "eslint": "1.10.3",
     "istanbul": "0.4.1",