chore(package): update delay to version 4.0.1

Closes #91

Author: greenkeeper[bot]

package.json

@@ -32,7 +32,7 @@
     "chai": "^4.0.2",
     "chai-as-promised": "^7.0.0",
     "coveralls": "^3.0.2",
-    "delay": "^3.0.0",
+    "delay": "^4.0.1",
     "husky": "^0.14.3",
     "lint-staged": "^7.2.2",
     "mocha": "^5.2.0",