chore(package): update standard-version to version 7.0.0

Closes #146

Author: greenkeeper[bot]

package.json

@@ -54,7 +54,7 @@
     "nuxt": "^2.0.0",
     "prettier": "^1.7.0",
     "request-promise-native": "^1.0.4",
-    "standard-version": "^5.0.0"
+    "standard-version": "^7.0.0"
   },
   "husky": {
     "hooks": {