fix: 🐛 don't install semantic-release, incompat with old Node

Author: streamich

.travis.yml

@@ -20,7 +20,7 @@ matrix:
   allow_failures: []
   fast_finish: true
 after_success:
-  - yarn semantic-release
+  - npx semantic-release
 branches:
   except:
     - /^v\d+\.\d+\.\d+$/

package.json

@@ -14,7 +14,6 @@
     "test:coverage": "jest --coverage",
     "test:watch": "jest --watch",
     "watch": "watch 'npm run build' ./src",
-    "semantic-release": "semantic-release",
     "prettier": "prettier --ignore-path .gitignore --write 'src/**/*.{ts,js}'",
     "prettier:diff": "prettier -l 'src/**/*.{ts,js}'",
     "tslint": "tslint 'src/**/*.ts' -t verbose",
@@ -35,7 +34,6 @@
     "cpy-cli": "2.0.0",
     "jest": "21.2.1",
     "rimraf": "2.6.2",
-    "semantic-release": "15.10.8",
     "@semantic-release/changelog": "3.0.1",
     "@semantic-release/npm": "5.0.6",
     "@semantic-release/git": "7.0.5",