chore: add conventional-github-releaser

Author: gregberge

package.json

@@ -20,6 +20,7 @@
     "babel-eslint": "^10.0.1",
     "babel-jest": "^23.6.0",
     "codecov": "^3.1.0",
+    "conventional-github-releaser": "^3.1.2",
     "eslint": "^5.6.1",
     "eslint-config-airbnb-base": "^13.1.0",
     "eslint-config-prettier": "^3.1.0",