rocket-okapi v0.8.0-rc.3

Note that this update is a minor version update, but still contains breaking changes because the
Rocket version had a minor update with breaking changes too. This will thus fix previous error
because of incompatibility.

Added

• Add ignore derive attribute to ignore function arguments from documentation. (#113)
• operation_id can now be overwritten using #[openapi(operation_id = "my_custom_id")],
  but it has to be unique in the API spec. (#63)
• Added support for #[openapi(deprecated)] to mark endpoint as deprecated in spec. (#123)

Changed

• rocket-okapi and rocket-okapi-codegen require rocket v0.5.0-rc.3. (#122)

Fixed

• mount_endpoints_and_merged_docs! does avoid combined paths with double /.
• Raw identifiers (r#type) can now be used in parameters. (#117)
• rocket::form::Form<T> now set requested data as "multipart/form-data". (#80)