Improving the UI of generics

[anandabits (Matthew Johnson)]

@beccadax

Store associated objects in a metatype? I'm a little more doubtful. Metatypes don't have the side allocation we think we'd store associated objects in, so we'd need a different implementation. But what's the point? You can store the "associated objects" in a static dictionary instead; that's not sufficient for objects because you want the associated objects to be released/deallocated when the object they're attached to is destroyed, but metatypes are immortal, so they don't have this concern.

This is what I was referring to. The approach you describe is exactly what I was referring to. It would be nice to be able to use them with a single API that also works with objects. This would allow both metatypes and objects to be used in contexts that require associated information.