chore: bump semantic release

.travis.yml

@@ -2,18 +2,15 @@ language: node_js
 cache:
   directories:
     - node_modules
+    - ~/.npm
 node_js:
-  - '7'
+  - '9'
   - '6'
   - '4'
-notifications:
-  email: false
-before_script:
-  - npm prune
-script:
-  - npm run test
+before_install:
+  - echo "//registry.npmjs.org/:_authToken=\${NPM_TOKEN}" > .npmrc
 after_success:
-  - npm run semantic-release
+  - npm run travis-deploy-once "npm run semantic-release"
 branches:
   except:
     - /^v\d+\.\d+\.\d+$/

package.json

@@ -16,7 +16,8 @@
     "commit": "git-cz",
     "commitmsg": "validate-commit-msg",
     "prepush": "npm test",
-    "semantic-release": "semantic-release pre && npm publish && semantic-release post"
+    "semantic-release": "semantic-release",
+    "travis-deploy-once": "travis-deploy-once"
   },
   "dependencies": {
     "plugin-error": "~1.0.1",
@@ -29,9 +30,10 @@
     "cz-conventional-changelog": "^2.0.0",
     "faucet": "0.0.1",
     "husky": "^0.13.3",
-    "semantic-release": "^6.3.2",
+    "semantic-release": "^15.6.0",
     "tape": "^4.0.1",
-    "validate-commit-msg": "^2.12.1",
+    "travis-deploy-once": "^5.0.0",
+    "validate-commit-msg": "^2.14.0",
     "vinyl": "^2.1.0"
   },
   "config": {