Release v0.4.0

Breaking changes

• Typed wrapper structs for string parameters — most API methods now accept TryInto<BucketName> / TryInto<ObjectKey> / etc., so &str / String / pre-validated typed values all work at call sites. Validation happens once at the boundary. (#200)
• Error type cleanup and reorganization. (#179)
• Request builders migrated to the TypedBuilder derive macro — builder surface is regenerated; some method shapes may differ. (#184)
• Credential provider type simplified from Arc<Box<dyn CredentialProvider>> to Arc<dyn CredentialProvider>. (#164)
• DeleteObjects batching lowered from 10,000 to 1,000 keys per request to match the documented S3 limit. (#208)
• Default multipart part size raised to 64 MiB (from the previous default, via an intermediate 16 MiB step). (#207, #209)

New features

• Request hooks infrastructure — intercept and modify in-flight requests, e.g. for load balancing. (#188, see examples/load_balancing_with_hooks.rs)
• Additional checksum algorithms: CRC32, CRC32C, SHA1, SHA256, and CRC64NVME. (#195)

Performance

• Signing key memoization; stat_object now issues HEAD instead of GET. (#197)
• Eliminated intermediate Vec<Bytes> allocation during HTTP request body preparation. (#192)

Fixes

• Virtual-hosted-style bucket requests now use / as the URL path. (#205)
• Two bugs fixed in AppendObjectContent multipart append. (#206)
• Correct part size in multipart copy; added missing response properties. (#196)
• rustls can now be used alongside sha2 and hmac. (#175)
• Form-decoding (not percent-decoding) is used for whitespace in URLs during signing. (#178)
• delete_and_purge_bucket deletes objects recursively. (#166)
• HTTP header constants use proper capitalization. (#186)

Housekeeping / internal

• Codebase consolidation and test infrastructure refresh. (#194)
• Test macro for parameterized integration tests. (#170)
• Duplicated code removed; lazy response evaluation. (#162)
• Dropped direct tokio / tokio-stream / tokio-util dependencies; library internals now use runtime-agnostic futures-util / async-stream combinators. Tokio is still pulled in transitively via reqwest / hyper, so a tokio-compatible runtime is still required at the call site. (#167)
• Clippy cleanup and unused-import pruning. (#182, #177)
• copy_object documentation. (#172)
• Added .github/copilot-instructions.md. (#191)

Full changelog: v0.3.0...v0.4.0

Release v0.3.0

New Contributors

• @feorlen made their first contribution in #159

Full Changelog: v0.2.0...v0.3.0

Release v0.2.0

What's Changed

Highlighted Changes

This is a rewrite of the library using a more robust and easier to use builder style and async using tokio.

New Contributors

• @HJLebbink made their first contribution in #71
• @OlalalalaO made their first contribution in #69
• @kyldvs made their first contribution in #83
• @anjalshireesh made their first contribution in #91
• @vajexal made their first contribution in #100
• @yaozongyou made their first contribution in #61
• @jeasai made their first contribution in #105
• @andrenatal made their first contribution in #112
• @jhonboy121 made their first contribution in #136
• @mishi321 made their first contribution in #103

Full Changelog: v0.1.0...v0.2.0