reactor/reactor-core v3.1.3.RELEASE on GitHub

This is the 3rd release of Reactor 3.1, part of BISMUTH-SR5 Release Train.

This is a recommended update for all Reactor 3 users.

⚠️ Update considerations and deprecations

The implementations of bufferWhen and windowWhen (which are also backing their timeout based variants) have changed, fixing leaks in the process.
distinct()/distinctUntilChanged() now use the full object (with a HashSet) instead of just the extracted hashcode() for their distinct criteria (#1025)
EventLoopProcessor#shutdownAndAwait(long, TimeUnit) has been deprecated (#986)
MpscLinkedQueue, FluxDelaySequence, FluxIndex, FluxIndexFuseable have been scoped public API and should NOT be used. A patch release will fix their scope back to package scope.

If Level is FINE/FINEST, log() now logs errors using debug()/trace() (#967)
ParallelFlux#composeGroup maintains parallelism() (#968)
EventLoop based Processors now have a Duration based shutdownAndAwait (#986)
Test features:
- Added meaningful toString to StepVerifier steps (d3e6c4b)
- Added Context testing features (#901, #898)
Add delaySequence operator to Flux, that just shifts the sequence forward in time (#989)
Prevent handle sink usage after error/complete (#965)
Make Context accessible through Signal from materialize and doOnEach (#947, #1004)
Avoid using only hashcode as default distinct()/distinctUntilChanged() criteria (#1025)

Detect same-thread request in Mono subscribeOn (#943, #949)
Execute doFinally even if subscribe() throws (#951)
Don't retain reference to UnicastProcessor subscriber on cancel (#980)
Prevent NPE when debug mode is activated via command line (#985)
Fix eventual premature termination issue with WorkQueueProcessor (4b2fd19)
[test] VirtualTimeScheduler: Use single worker, wait for expectations before advancing time (#1001, #992, #959)
windowWhile now replenishes on premature cancel (#1017)
Fixed leak: retaining of windows in windowWhen (#975)
Fixed leak: buffers being retained until completion of a bufferWhen Flux (#969, 170f39b)
Notify lack of request on bufferTimeout (#994)
Process fatal exceptions in Schedulers.handleError, don't throw / silently fail (#916)

Improve documentation of Flux.merge, advanced features reference guide, various typos (#1020, #970)
Bump Kotlin, AssertJ and ReactiveStreams versions (#915, 69fbde6, 6c0bde7)
Improve CI testing, avoid longer tests on Travis only, decrease verbosity of some tests (14d607b, #325, #1007, )