Hi,

Current Field specification is quite restrictive in terms of supported attributes. For example, if a final user is interested in rendering the specification using Swagger, there are several attributes like enum that can't be used right now. In order to make possible to add more attributes and not being coupled to a concrete rendering specification, would it be possible to add a dictionary attribute as part of the Field namedtuple for collecting them?. Then final renderers can use such dictionary for including more elements