chore: Add core-js and update travis.yml

Author: arthurdenner

.travis.yml

@@ -7,6 +7,6 @@ notifications:
 node_js: '8'
 install: npm install
 script: npm run validate
-after_success: kcd-scripts travis-after-success
+after_success: npx semantic-release
 branches:
-  only: master
+  only: master

package.json

@@ -37,6 +37,7 @@
   "dependencies": {
     "@babel/runtime": "^7.4.5",
     "classnames": "^2.2.5",
+    "core-js": "^3.1.3",
     "date-fns": "^1.29.0",
     "dayzed": "^2.2.0",
     "format-string-by-pattern": "^1.0.0",

yarn.lock

@@ -5057,6 +5057,11 @@ core-js@^2.4.0, core-js@^2.5.0, core-js@^2.5.3, core-js@^2.5.7:
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.5.7.tgz#f972608ff0cead68b841a16a932d0b183791814e"
   integrity sha512-RszJCAxg/PP6uzXVXL6BsxSXx/B05oJAQ2vkJRjyjrEcNVycaqOmNb5OTxZPE3xa5gwZduqza6L9JOCenh/Ecw==
 
+core-js@^3.1.3:
+  version "3.1.3"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.1.3.tgz#95700bca5f248f5f78c0ec63e784eca663ec4138"
+  integrity sha512-PWZ+ZfuaKf178BIAg+CRsljwjIMRV8MY00CbZczkR6Zk5LfkSkjGoaab3+bqRQWVITNZxQB7TFYz+CFcyuamvA==
+
 core-util-is@1.0.2, core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"