chore(package): update husky to version 4.2.1

Closes #38

Author: greenkeeper[bot]

package.json

@@ -59,7 +59,7 @@
     "flow-bin": "^0.84.0",
     "flow-copy-source": "^1.3.0",
     "flow-remove-types": "^1.2.3",
-    "husky": "^0.14.3",
+    "husky": "^4.2.1",
     "lint-staged": "^6.0.0",
     "nodemon": "^1.15.1",
     "prettier": "^1.14.3"