Spring Kafka 2.2.0.M1 已发布，更新内容如下：
Upgrade Clients to 1.1.1
Upgrade Spring Framework, Data to RC1
GH-753: Close transactional producer on error
GH-732: Refactor KafkaEmbedded for JUnit 5
Upgrade to Gradle 4.9
Valid class names in KafkaListenerEndpointRegistry customization docs
GH-739: Custom (De)Serializer Doc Improvement
Simplify assertions in MessagingMListenerAdapter
GH-650: Pause/Resume doc example
GH-723: Relax reply template generic types
GH-723: Relax reply template generic types
GH-734: MimeType headers as String
Add ErrorHandlingDeserializer
GH-731: Replying template improvements
MessagingMessageListenerAdapter: Fix JavaDoc
GH-725: Fix return Collection
GH-719: Exclude Spring 4.X dependency
GH-716: Null Payload Doc Improvements
Javadocs for ContainerProperties constants
Make ContainerProperties constants public
Fix varargs warn for CompositeProducerListener
GH-686: Handle tombstones in Json Ser/Deser
GH-690: Propagate AfterRollbackProcessor to child
Typo fix for addTopics and doWithAdmin @SInCE
GH-701: Support ConsumerRecords (@Klistener)
Add licence and notice to all artifacts
GH-699: Fix line wrap
GH-699: Fix Batch Listener with Kotlin
GH-693: Add BytesJsonMessageConverter
GH-696: Add missingTopicsFatal container property
GH-691: Add CompositeProducerListener
Update JaCoCo to 0.8.1 (JDK10)
ProducerListener Improvements
More polishing - add Method to log
Polishing for previous commit
Emit WARN log for @sendto with void return
GH-683: Fix Transactions with ErrorHandler
Container factory doc polishing
GH-676: Allow to add topics into KafkaEmbedded
SIKGH-204: Support auto config for all containers
GH-598: ConsumerFactory default methods
GH-666: KafkaEmbedded doWithAdmin, addTopics
Improve exception message with jar mismatch
GH-667: Fix BatchErrorHandler for generic errors
Docs to 2.2 - Kafka/SF versions
Doc polishing
Add Kotlin test case
GH-661: Close Producer after beginTransaction fail
GH-656: Fix seek on rollback
Fix Docbook sourceDir
Upgrade to Gradle 4.7 and others, build polishing
GH-652: JsonSerializer add null check for Headers
KBGH-356: Fix thread naming with no bean name
GH-646: Avoid sync when no transaction
GH-646: Transaction Improvements
GH-640: Upgrade kafka version to 1.1.0
GH-550: master to 2.2; fix tangles
GH-642: Increase test timeout
[artifactory-release] Next development version
[artifactory-release] Release version 2.1.5.RELEASE
GH-637: Fix spurious nonresponsive consumer events
GH-634: 1.1.0 Client compatibility
GH-621: Add KafkaStreams customizer
Change log-compaction url
GH-631: Fail fast with missing required group.id
Fix typo in invokeRecordListenerInTx method name
Fix typo in the KafkaListenerErrorHandler
GH-618: Add StreamsBuilderFBean#getStreamsConfig
GH-623: Fix AckMode.COUNT
GH-566: Ack Concurrency Issue
GH-614: Fix general consumer error handling
GH-597: Add default impls for listener methods
Some code polishing for optimization
GH-609: Pause/resume polishing; events
GH-601: @KafkaListener: Support List<Message>
Catch exceptions thrown from error handler
Deprecate JsonDeserializer.DEFAULT_VALUE_TYPE
Upgrade to kafka-clients 1.0.1
GH-599: Fix initial seek
Support JUnit5 in tests
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