Maybe I am missing something here but ...
why, if all version and build numbers for all your targets (iOS app, iMessage extension, Apple Watch app, Today Extension ...) need to be identical, do I need to go through all of them and change them one by one manually each time I want to create a new build for the store? What's the use of that?
And now with Xcode 8 it's even worse. Every time I type a character in those fields it loses focus half a second later, so it takes 5 times more time to change all those values.