Fix docs when routing MethodView specifying methods

Add Blueprint.add_url_rule

Lazy register components (default responses, ETag and pagination headers)

Fix Blueprint registration with custom name (Flask 2.0.1)

Use apispec 5 and replace missing with load_default

Fix link in AUTHORS.rst

Use click.echo() for spec output commands

Generate header parameter and responses in API when ETag is set

Fix GitHub actions workflow

Support RapiDoc

Forgotten in #171

Rework TestAPISpecServeDocs

Split tests to minimize combinations

Use GitHub Actions

Remove feature setting `basePath` from `APPLICATION_ROOT`

Move to werkzeug 2 and flask 2

Fix the type of examples in docstring

Use webargs>=8.0.0,<9

Minor fixes to the arguments doc

A minor change to phrasing in one place (where I found it hard to
read), but mostly syntax fixin...

Add Blueprint.alt_response decorator to document alternative responses

Make code argument first positional in @response

Drop claim that CPython 3.6+ preserves Marshmallow schema order

Unfortunately, the actual Marshmallow `Schema` implementation that orders fields uses _sets_ and...

Make DEFAULT_ERROR optional (opt-out)

Only add referenced responses to the spec

Case covered:
- Repeated responses across multiple paths
- Multiple methods / responses in a sin...