fix(package): update debug to version 4.0.1

Closes #196

Author: greenkeeper[bot]

package.json

@@ -22,7 +22,7 @@
   },
   "dependencies": {
     "chalk": "^2.0.1",
-    "debug": "^3.0.0",
+    "debug": "^4.0.1",
     "denodeify": "^1.2.1",
     "findup-sync": "^2.0.0",
     "fs-extra": "^5.0.0",