Perfect is the enemy of good I guess. If I'm building a product now, I want a library that works well now and never breaks when I upgrade to the latest version

Perfect is the enemy of good I guess. If I'm building a product now, I want a library that works well now and never breaks when I upgrade to the latest version. If someone gets a great idea for a better library, make it a separate library. So backwards compatibility is definitely a feature I want.