Unwanted diff when modifying generated xcodeproj

[toshi0383]

Xcode succeeds to open generated xcodeproj, but generates a lot of diffs when you add files from Xcode.

This is problem especially when I'm debugging generated xcodeproj, trying to figure out what is correct structure for specific state. I want to edit xcodeproj to expected state, then check git diff to recognize what was wrong in XcodeGen.

So I guess the goal is Xcode creating no diffs when modifying generated xcodeproj.

[yonaskolb]

I'll try and get this resolved after the next xcproj release which fixes some missing defaults