chore(package): update semantic-release to version 17.0.8

Closes #54

Author: greenkeeper[bot]

package.json

@@ -110,7 +110,7 @@
     "rollup-plugin-node-resolve": "^4.2.3",
     "rollup-plugin-sourcemaps": "^0.4.2",
     "rollup-plugin-typescript2": "^0.21.0",
-    "semantic-release": "^15.9.16",
+    "semantic-release": "^17.0.8",
     "shelljs": "^0.8.3",
     "travis-deploy-once": "^5.0.9",
     "ts-jest": "^24.0.2",