fix(package): update noflo-core to version 0.6.1

Closes #170

Author: greenkeeper[bot]

package.json

@@ -11,7 +11,7 @@
     "google-auth-library": "~0.12.0",
     "microflo": "~0.6.0",
     "noflo": "~1.1.0",
-    "noflo-core": "~0.5.0",
+    "noflo-core": "~0.6.1",
     "noflo-filesystem": "~2.0.0",
     "noflo-mqtt": "~0.5.0",
     "noflo-objects": "~0.5.0",