Changes:
* Private constructor for case class means private apply in Scala 3
* Logger class with Any instead of wildcard where needed
* Explicit import of internal implicit conversion import SinkToCompletionStage
* Hopefully source and binary compatible Scala 3 signature for GraphApply.create methods
* ZipLatestWith leaking private type
* Auto apply-to-lambda made explicit
* Internal async callback event class covariant
* Hub leaking private type
* Remove cycles in stream Buffer classes
* Avoid cyclic import in ResizableMultiReaderRingBuffer
* Safe cast of Subscribers
* Explicit import of internal implicit conversion SourceToCompletionStage
* Ambigous field name and method
* recover delegates using PF from javadsl not inferred, made explicit
* TcpStage completing promise with wrong type
* Collect aggregator empty value cannot be underscore with type ascription
* Some type alias shenanigans in QueueSink removed
* Explicit type on effectiveMaximumBurst in Throttle
* Override method return type not inferred in GraphInterpreter
* MutableCollectorState.accumulated getter got wrong type somehow
* TLS actor fallback case only applicable to null
* Some internal unchecked pattern matching removed
* Ok that createGraph is not present in Java API
* Separate impl per language for implicit actor system apply
* Move more release instructions to the template
Sparked by discussion in #17432
* use newer version in example
Co-authored-by: Renato Cavalcanti <renato@cavalcanti.be>
* point to sonatype for snapshots
Co-authored-by: Renato Cavalcanti <renato@cavalcanti.be>
* Fix mapConcat context propagation
* Remove default ContextPropagation implementation to reduce possible overhead when no Telemetry is in use
* fix pullFirstSubElement onPull
* CR follow up
* Loads of byte array copy/allocations squashed
* Use a central place for the proto unsafe instead of ad hoc
* Extra docs on serializer toBinary about not mutating bytes after returned
* Found some more toArray:s that can potentially benefit from being unsafe
* Array handed to user callback so extra docs needed
* Unsafe reading of underlying bytes of strings fixed
* Deprecate LevelDB
In preparation of moving into the testing infra (or deleting it completely) at some distant future point in time
* Remove leveldb tests where there also is an inmem one
* More details in deprecation text, recommend inmem + journal proxy for testing etc.
* Optimizes retrieval of mandatoryAttributes by removing potential allocation of OptionVal
* Optimizes ActorContextImpl by avoiding allocations inserted by Scala 2.13
* Optimizes Artery Codecs to avoid allocations associated with Scala 2.13 pattern-matching
* Avoid pattern-matching on OptionVal since Scala 2.13 allocates when checking the pattern
