Upgrade dependencies

- @babel/core
- @babel/preset-env
- rollup

tools/bundle/package.json

@@ -4,11 +4,11 @@
     "private": true,
     "main": "index.js",
     "dependencies": {
-        "@babel/core": "~7.1.0",
+        "@babel/core": "~7.2.0",
-        "@babel/preset-env": "~7.1.0",
+        "@babel/preset-env": "~7.2.0",
         "dedent": "0.7.0",
         "pretty-ms": "4.0.0",
-        "rollup": "0.66.6",
+        "rollup": "0.67.4",
         "rollup-plugin-babel": "4.0.3",
         "rollup-plugin-commonjs": "9.2.0",
         "rollup-plugin-json": "3.1.0",