overriding factory attributes is causing related field callbacks to fail about rom-factory

[solnic]

Thanks for reporting this, clearly a bug. I think we should re-think this API in general. Yielding attribute values via block args can be problematic when you have attributes that match ruby keywords.

[flash-gordon]

I still think having a convention for reserved words like do |then| -> do |then_| would be good enough

[solnic]

@flash-gordon yeah...seems like a pragmatic choice. I wonder though....maybe we could provide a struct with values that are lazy, this way you could still rely on more than one value but access it through one object.

[flash-gordon]

@solnic yeah I think it'd be possible too

[yld]

This makes ROM factory somewhat unusable