I guess for some definition of stable[1] you could say that we knew Swift 2 was not that, and by the time Swift 5 was released we knew it'd reached that milesto

I guess for some definition of stable[1] you could say that we knew Swift 2 was not that, and by the time Swift 5 was released we knew it'd reached that milestone. [1] https://www.swift.org/blog/abi-stability-and-more/ https://www.swift.org/blog/abi-stability-and-more/