v4.0.0-RC1

This is the release candidate for sttp-client4, a major release of the Scala HTTP client you always wanted!
If no major issues are found, which would impact the public API, a final release of sttp-client 4.0.0 will follow in about a month.

Links

• Documentation, examples
• Migrating from v3 to v4
• Community forum - ask migration questions here
• Issues - report bugs, migration problems here

New features

• simple use-cases, simple types: most of the time you'll work with Request[T], SyncBackend or Backend[F], reducing the number of type parameters involved
• much better error reporting, due to the above simplifications
• better integration with IDE's auto-complete
• clearer types for streaming & WebSocket requests
• ...OrFailed response descriptions
• client-side, configurable compression support
• deeper metrics & logging integration
• improved OpenTelemetry, Prometheus, Logging backends
• reworked documentation with a library of examples
• request body progress callbacks for HttpClient-based backends
• onBodyReceived callback support
• more predictable BackendStub behavior
• a number of quality-of-life improvements, extending scaladocs and making the API more consistent

What’s Changed

• Update client4:caching-backend, ... to 4.0.0-M26 (#2437) @softwaremill-ci

Dependency updates

• Update zio-json to 0.7.15 (#2439) @softwaremill-ci
• Update zio, zio-streams to 2.1.15 (#2438) @softwaremill-ci