Merge pull request #23 from Deliaz/greenkeeper/mailgun-js-0.17.0

Update mailgun-js to the latest version 🚀

Author: Deliaz

package.json

@@ -16,7 +16,7 @@
     "farmhash": "^2.0.4",
     "include-all": "^4.0.3",
     "jsonwebtoken": "^8.1.0",
-    "mailgun-js": "^0.15.0",
+    "mailgun-js": "^0.17.0",
     "moment": "^2.19.3",
     "password-validator": "^4.0.0",
     "rc": "^1.2.2",