* scala3: show scala3-compatible code in most of akka-docs
There are some Streams samples that don't compile with Scala 3
yet.
* Fix warnings/errors
* scalafmtSbt
* Include Scala 3 in cross-build
sbt cross-building sometimes behaves surprisingly, so this does not work
yet: when switching to 3.0.1-RC1 it still tries to build the modules
that do not support that version yet, even though they are 'excluded'.
This also currently breaks cross-publishing, so we cannot merge this.
Once this works we should add a note to the documentation clarifying
that the Scala 3 artifacts are experimental.
* Fix jackson test dependency
* Don't publish docs for scala3 artifacts for now
* Publish empty doc packages for Scala 3 artifacts
* Remove @switch when it doesn't take effect
* Use ActorRef.noSender
* Minor tweaks to SchedulerSpec
* Disambiguate TypedActor for Scala 3
* Bump ScalaTest to a version compatible with Scala 3
* Bump ScalaCheck
* Disambiguate Event in SupervisorHierarchySpec
* Scala 3 compatible EventBusSpec
* Prevent private unused variables to be erased by Scala 3
* Bump mockito
* Explicit actorRef2Scala import
* restore original .scalafix.conf
* Scala 3 compatible tailrec
* Reminder to re add switch annotation in case
* Move to nowarn instead of silencer
* Bump to Scala 2.12.13
* Cross compatible annotations
* fix docs generation
* adapt the build for Scala 3
* fix errors but bus
* remove more SerialVersion from trait
* scalacheck only from scalatest
* cross-compile akka-actor-tests
* restore cross-compilation
* early initializers workaround
* scalacheck switch
* cross compatible FSM.State class
* cross compatible LARS spec
* Change results to pass LineNumberSpec
* fix stackoverflow in AsyncDnsResolverIntegrationSpec
* FSM.State unapply
* fix Scala 2.13 mima
* SerialVersionRemover compiler plugin
* removed unused nowarns
For details on how these differ see:
https://www.scala-sbt.org/1.x/docs/Cross-Build.html#More+about+using+cross-built+libraries
The motivaton for this is so this part of the build doesn't need to be
(ironically) patched when running with a binary-compatible build of the
next patch release of Scala (e.g. Scala 2.13.2-bin-SHA).
Ideally this could be backported to the release-2.5 branch so it would
be immediately of use, otherwise it'll only be available in the
community builds that track Akka 2.6.
* Fix remaining akka-testkit warnings
Mostly in tests and 2.13
* Add issue link
* MiMa exclude for multi-node-testkit
We don't promise bincompat there anyway, but perhaps good to keep mima there
so at least we don't break things accidentally
