If you make substantive changes, for sure. It's possible that you may want to make cosmetic changes (or maybe change how you're specializing something where th

If you make substantive changes, for sure. It's possible that you may want to make cosmetic changes (or maybe change how you're specializing something where the implementation is more polymorphic?). Still, I certainly don't see much of an argument that being able to edit the two separately has much value. I'm just not entirely convinced of non-existence.