I'm surprised no one has mentioned this; AHK broke compatibility with this upgrade. I tried upgrading autohotkey and it braked my scripts. It seems to have an auto-regress feature, which is nice. If someone knows where there is a comprehensive this-for-that upgrade guide, that would be nice; I didn't see such a thing on the site.
> AutoHotkey v2 aims to improve the usability and convenience of the language and command set by sacrificing backward compatibility. As such, scripts written for v1 generally will not work without changes on v2