chore(package): update ts-node to version 4.0.2

Closes #27

Author: greenkeeper[bot]

package.json

@@ -18,7 +18,7 @@
     "mocha": "^3.3.0",
     "onchange": "^3.2.1",
     "tap-spec": "^4.1.1",
-    "ts-node": "^3.0.3",
+    "ts-node": "^4.0.2",
     "tslint": "^5.2.0",
     "tslint-config-typings": "^0.3.1",
     "typescript": "^2.3.2",