chore: simplify semantic-release a bit (#153)

Author: SimenB

.travis.yml

@@ -24,9 +24,9 @@ jobs:
     script:
     - npx -p danger@^3 danger ci
   - stage: release
-    node_js: 8
+    node_js: lts/*
     os: linux
-    after_success: yarn travis-deploy-once "yarn semantic-release"
+    after_success: npx semantic-release@15
 cache:
   yarn: true
 branches:

package.json

@@ -46,9 +46,7 @@
     "jest-runner-eslint": "^0.4.0",
     "lint-staged": "^7.0.0",
     "prettier": "^1.10.2",
-    "prettylint": "^1.0.0",
-    "semantic-release": "^15.0.2",
-    "travis-deploy-once": "^4.3.1"
+    "prettylint": "^1.0.0"
   },
   "prettier": {
     "proseWrap": "always",