_why's done some work on this: http://github.com/why/potion/tree/master http://github.com/why/potion/tree/master Scoped mixins. Basically, you can modif

_why's done some work on this: http://github.com/why/potion/tree/master http://github.com/why/potion/tree/master Scoped mixins. Basically, you can modify object behavior within a scope. So changes to core classes can be localized. ++ INCOMPLETE ++