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- https://pewpewthespells.com/blog/buildsettings.html
- http://myers.io/2014/09/18/xcode-build-tokens/
- http://pewpewthespells.com/blog/using_xcode_targets.html
- https://medium.com/ios-os-x-development/a-better-way-to-automatically-merge-changes-in-your-xcode-project-files-3d83b3583fe4
- http://www.russbishop.net/shoot-the-heap
- https://designcode.io/