• MSRV is now 1.85, rskafka now uses Rust version 2024 (#218, #231, #238, #245, #257)

• improve error handling (#230)
• support SASL SCRAM (#247) and OAUTHTOKEN (#253), fix PLAIN (#255)
• support OffsetAt::Timestamp (#248)

• remove reference to IOx from README (#250)

• drop async-trait (#245)
• async-socks5 to 0.6 (#232)
• crc32c to 0.6.5 (#231)
• drop pin-project-lite (#246)
• ring is hardcoded as a crypto provider (#233)
• rustls to 0.23 (#227, #233)
• tokio-rustls to 0.26 (#227, #233)
• zstd to 0.13 (#223)

• cargo deny config fixed/updated (#243, #251)
• CI fixes (#254)
• j4rs to 0.20.0 (#236, #237, #238)
• drop procspawn (#222, #244)
• proptest-derive to 0.5 (#220, #240)
• rdkafka to 0.35 (#221, #229, #242, #260)
• rustls-pemfile to 2.0 (#226)
• tracing-log to 0.2 (#224)

• backoff config w/ deadline added to ClientConfig (#213, #215)
• PLAIN SASL auth (#216)

• license specifier now has correct SPDX 2.1 format

• integer-encoding to 3 (#209)
• j4rs (dev dependency) to 0.17.0 (#207, #210)
• rdkafka (dev dependency) to 0.33 (#206, #208)

• switch from time to chrono (#176, #196)
• make errors non-exhaustive (#159)

• topic deletion (#191)
• respect throttling (#184)
• allow setting a custom client ID (#180)
• pub ProducerClient for instrumentation hook (#162)
• add some getters to PartitionClient (#154)

• log metadata mode in get_leader(#188)
• log reason about WHY we invalidate caches (#185)
• remove interior mutable from Messenger::version_ranges (#183)
• async flushing & buffering + lock contention (#173)
• pre-warm cache broker connections (#166)
• support pre-warming PartitionClient (#165)
• metadata cache for leader discovery (#163)
• extend ServerError with helpful data (#160)
• speed up IO (#156)

• (potential) broker cache invalidation race (#187)
• (potential) metadata cache invalidation race (#186)
• Fix typo in error message (#158)
• use compact arrays where needed (#155)

• dotenv -> dotenvy (#161)
• rustls to 0.21 (#200)
• zstd to 0.12 (#195)
• criterion (dev dependency) to 0.4 (#177, #204)
• j4rs (dev dependency) to 0.15 (#193, #197)
• rdkafka (dev dependency) to 0.31 (#189, #202, #203)
• CI rust toolchain to 1.65 (#194)

• assorted DX and infrastructure improvements (#116, #123, #127, #128, #135, #138, #145, #146)
• convert some as casts to proper conversion (#117, #118, #120, #121)
• make Client::{controller,partition}_client sync (#136)

• rustls-pemfile to 1.0 (#126)
• uuid to 1.0 (#131)

• multiple cancellation and panic safety fixes (#113, #115)
• Java interopt, esp. for Snappy-compressed messages (#108)
• fix potential OOM cases (#138, #141)
• remove potentially buggy Redpanda quirk (#150)
• documentation (#151)

• Record::{key,value} are now optional, following the underlying Kafka protocol (#93)
• compression support, PartitionClient::produce requires compression parameter (#82, #91, #92, #94)
• PartitionClient::get_high_watermark was replaced by PartitionClient::get_offset (#100)
• StreamConsumer::new start_offset parameter changed from i64 to StartOffset type (#104)
• rework features (#107)

• record deletion (#97)

• ignore InvalidReplicationFactor (#106)
• fix rare panic in BatchProducer (#105)
• filter out records that were not requested (#99)
• terminate consumer stream on OffsetOutOfRange (#96)

• faster CRC calculation (#85)

This is the first release featuring:

• tokio-based async connection handling
• TLS and SOCKS5 support
• listing topics
• create a topic
• produce records (w/o compression)
• consume records (w/o compression)
• basic consumer streams
• framework to set up record batching