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

Closes #20

Author: greenkeeper[bot]

package.json

@@ -50,7 +50,7 @@
     "lint-staged": "^8.0.0",
     "prettier": "^1",
     "rimraf": "^2",
-    "semantic-release": "^15",
+    "semantic-release": "^16.0.4",
     "ts-jest": "^23",
     "tslint": "^5",
     "tslint-config-prettier": "^1",