chore(package): update semantic-release to version 16.0.4

Closes #13

Author: greenkeeper[bot]

package.json

@@ -68,7 +68,7 @@
     "express": "^4.16.4",
     "jest": "^23.6.0",
     "jsdoc": "^3.5.5",
-    "semantic-release": "^15.12.4",
+    "semantic-release": "^16.0.4",
     "standard": "^12.0.1",
     "supertest": "^3.3.0",
     "travis-deploy-once": "^5.0.9"