chore(package): update standard-version to version 7.0.1

Closes #60

Author: greenkeeper[bot]

package.json

@@ -60,7 +60,7 @@
     "nyc": "^11.0.3",
     "rimraf": "^2.6.1",
     "source-map-support": "^0.5.0",
-    "standard-version": "^4.2.0",
+    "standard-version": "^7.0.1",
     "tipi-cli": "^3.1.0",
     "tslint": "^5.4.3",
     "typescript": "^2.4.1"