fix(build): use latest semantic-release package

.travis.yml

@@ -43,7 +43,7 @@ script:
 
 after_success:
   #- npm run upload-coverage  # disabled due to tests being disabled
-  - npm run semantic-release
+  - npm run travis-deploy-once "npm run semantic-release"
 
 branches:
   except:

package.json

@@ -56,7 +56,8 @@
     "verify:js:fix": "eslint --fix -c config/verify/.eslintrc \"src/**/*.js\" \"src/**/*.jsx\" \"unitTest/**/*.js\" \"unitTest/**/*.jsx\" \"config/**/*.js\" \"config/**/*.jsx\" && echo ✅ verify:js:fix success",
     "verify:js:watch": "chokidar 'src/**/*.js' 'src/**/*.jsx' 'unitTest/**/*.js' 'unitTest/**/*.jsx' 'config/**/*.js' 'config/**/*.jsx' -c 'npm run verify:js:fix' --initial --silent",
     "verify:watch": "npm-run-all --parallel verify:js:watch verify:css:watch --silent",
-    "semantic-release": "semantic-release pre && npm publish && semantic-release post && npm run docs:publish"
+    "semantic-release": "semantic-release && npm run docs:publish",
+    "travis-deploy-once": "travis-deploy-once"
   },
   "config": {
     "commitizen": {
@@ -111,7 +112,7 @@
     "postcss-loader": "1.2.2",
     "protractor": "3.3.0",
     "rimraf": "2.5.4",
-    "semantic-release": "6.3.2",
+    "semantic-release": "15.5.4",
     "serve": "1.4.0",
     "serve-https": "1.5.3",
     "style-loader": "0.13.1",
@@ -123,7 +124,8 @@
     "swanky": "2.6.0",
     "swanky-processor-ngdocs": "2.2.3",
     "webpack": "2.2.0",
-    "webpack-dev-server": "2.2.0"
+    "webpack-dev-server": "2.2.0",
+    "travis-deploy-once": "5.0.0"
   },
   "engines": {
     "node": ">=6.x",