actix-web: v4.3.0

Added

• Add ContentDisposition::attachment() constructor. #2867
• Add ErrorHandlers::default_handler() (as well as default_handler_{server, client}()) to make registering handlers for groups of response statuses easier. #2784
• Add Logger::custom_response_replace(). #2631
• Add rudimentary redirection service at web::redirect() / web::Redirect. #1961
• Add guard::Acceptable for matching against Accept header MIME types. #2265
• Add fallible versions of test helpers: try_call_service(), try_call_and_read_body_json(), try_read_body(), and try_read_body_json(). #2961

Fixed

• Add Allow header to Resource's default responses when no routes are matched. #2949