chore(package): update ts-node to version 7.0.1

Closes #7

Author: greenkeeper[bot]

package.json

@@ -49,7 +49,7 @@
     "rimraf": "^2.6.2",
     "rxjs": "^6.0.0",
     "rxjs-compat": "^6.0.0",
-    "ts-node": "^6.0.1",
+    "ts-node": "^7.0.1",
     "tslint": "^5.0.0",
     "typescript": "^2.7.2",
     "semantic-release": "^15.1.8",