64bit build for ios

Just solved this issue myself using: Performance alert when deploying to iOS 10.1

I ran ionic platform update ios and in package.json changed the ios version inside cordovaPlatforms to 4.3.0:

"cordovaPlatforms": [
    "ios",
    {
      "platform": "ios",
      "version": "4.3.0",
      "locator": "ios"
    }
  ],