Desired inheritance behavior

Should subclasses inherit method decorators or require re-decorating?

``` python
class PetResource:
@marshal_with(PetSchema)
def get(self):
return session.query(Pet).all()

class CatResource:
def get(self):
return session.query(Pet).filter_by(type='cat').all()
```

The current implementation sketch _does_ propagate serialization with `PetSchema` to `CatResource.get`. I think this is convenient, but is it too magical or counterintuitive? What if users want to override a view method without using its parent decorators?

@sloria, help!