+++++++++++++++++++
Features:
- Pass ``Api`` instance to _prepare_*_doc callbacks (:pr:`222`).
- Allow the user to opt-out of the feature adding a default error to each
response and allow customization of the default error name (:pr:`222`).
- *Backwards-incompatible*: Only add referenced default responses to the spec,
using ``ResponseReferencesPlugin``. (:pr:`208`)
Thanks :user:`lindycoder` for the pull-request.
Bug fixes:
* Document error response even if ``response`` decorator is not used
(:pr:`222`).