chore(package): update uglifyjs-webpack-plugin to version 1.0.0-beta.3 (#169)

package.json

@@ -93,7 +93,7 @@
     "tslint": "^5.0.0",
     "typedoc": "^0.9.0",
     "typescript": "^2.5.3",
-    "uglifyjs-webpack-plugin": "^0.4.3",
+    "uglifyjs-webpack-plugin": "^1.0.0-beta.3",
     "webpack": "^3.5.5",
     "webpack-dev-server": "^2.9.1"
   },