[UNIXgod]

If he said it I believe it. I don't worry so much about Matz and the Ruby core committers breaking things.

[jrochkind1]

Well, i mean, there were backwards incompat changes in ruby 2.0, which I think is after he said there woudln't be. They were fairly minor and easily dealt with, but there was certainly some software that had to be adjusted for ruby 2.0 from 1.9.3.

https://gist.github.com/nathany/6046171