update spike-core to version 0.11.0 (#11)

Author: greenkeeperio-bot

package.json

@@ -23,7 +23,7 @@
     "coveralls": "2.x",
     "nyc": "^7.0.0",
     "source-loader": "^0.2.0",
-    "spike-core": "^0.9.0",
+    "spike-core": "^0.11.0",
     "standard": "^7.1.2"
   },
   "engines": {