axum-core - v0.2.0

• added: Add IntoResponseParts trait which allows defining custom response
  types for adding headers or extensions to responses (#797)

• breaking: Using HeaderMap as an extractor will no longer remove the headers and thus
  they'll still be accessible to other extractors, such as axum::extract::Json. Instead
  HeaderMap will clone the headers. You should prefer to use TypedHeader to extract only the
  headers you need (#698)

  This includes these breaking changes:

  • RequestParts::take_headers has been removed.
  • RequestParts::headers returns &HeaderMap.
  • RequestParts::headers_mut returns &mut HeaderMap.
  • HeadersAlreadyExtracted has been removed.
  • The HeadersAlreadyExtracted variant has been removed from these rejections:
    • RequestAlreadyExtracted
    • RequestPartsAlreadyExtracted
  • <HeaderMap as FromRequest<_>>::Rejection has been changed to std::convert::Infallible.

• breaking: axum::http::Extensions is no longer an extractor (ie it
  doesn't implement FromRequest). The axum::extract::Extension extractor is
  not impacted by this and works the same. This change makes it harder to
  accidentally remove all extensions which would result in confusing errors
  elsewhere (#699)
  This includes these breaking changes:

  • RequestParts::take_extensions has been removed.
  • RequestParts::extensions returns &Extensions.
  • RequestParts::extensions_mut returns &mut Extensions.
  • RequestAlreadyExtracted has been removed.
  • <Request as FromRequest>::Rejection is now BodyAlreadyExtracted.
  • <http::request::Parts as FromRequest>::Rejection is now Infallible.
  • ExtensionsAlreadyExtracted has been removed.

• breaking: RequestParts::body_mut now returns &mut Option<B> so the
  body can be swapped (#869)