Merge pull request #88 from nextapps-de/greenkeeper/google-closure-co…

…mpiler-20190513.0.0

Update google-closure-compiler to the latest version 🚀

package.json

@@ -67,7 +67,7 @@
     "chai": "^4.2.0",
     "codacy-coverage": "^3.4.0",
     "coveralls": "^3.0.3",
-    "google-closure-compiler": "^20190415.0.0",
+    "google-closure-compiler": "^20190513.0.0",
     "mocha": "^6.0.1",
     "mocha-lcov-reporter": "^1.3.0",
     "mocha-phantomjs": "^4.1.0",