1.3 API promotions

[akarnokd]

Planned release date for 1.3: May 1st, 2017

Promote Experimental to stable:

• rx.exceptions.AssemblyStackTraceException
• rx.functions.Cancellable
• rx.internal.observers.AssertableSubscriberObservable
• rx.internal.operators.FlatMapCompletable
• rx.internal.operators.FlatMapSingle
• rx.internal.schedulers.SchedulerWhen
• rx.internal.util.BackpressureDrainManager
• rx.internal.util.BlockingUtils (the class and its single method)
• rx.Completable.fromEmitter()
• rx.Completable.test()
• rx.CompletableEmitter
• rx.CompletableSubscriber
• rx.Emitter
• rx.Scheduler.when()
• rx.SingleEmitter
• rx.Single.fromEmitter
• rx.Single.merge(Observable<Single<T>>) (2 overloads)
• rx.Single.mergeDelayError(Observable<Single<T>>) (2 overloads)
• rx.Single.cache()
• rx.Single.to()
• rx.Single.doOnEach()
• rx.Single.doOnSuccess()
• rx.Single.test()
• rx.observers.AssertableSubscriber
• rx.observers.AsyncCompletableSubscriber
• rx.observers.SafeCompletableSubscriber
• rx.observers.TestSubscriber.getCompletions()
• rx.observers.TestSubscriber.awaitValueCount()
• rx.observers.TestSubscriber.assertValuesAndClear()
• rx.schedulers.Schedulers.reset()
• rx.plugins.RxJavaCompletableExecutionHook
• rx.plugins.RxJavaHooks
• rx.plugins.RxJavaPlugins.reset()
• rx.plugins.RxJavaPlugins.getCompletableExecutionHook()
• rx.plugins.RxJavaPlugins.registerCompletableExecutionHook()
• rx.plugins.RxJavaSchedulersHook.createComputationScheduler() (2 overloads)
• rx.plugins.RxJavaSchedulersHook.createIoScheduler() (2 overloads)
• rx.plugins.RxJavaSchedulersHook.createNewThreadScheduler() (2 overloads)
• rx.subjects.UnicastSubject
• rx.Observable.create(Action1<Emitter<T>>, Emitter.BackpressureStrategy)
• rx.Observable.unsafeCreate()
• rx.Observable.to()
• rx.Observable.zip(Observable[], FuncN)
• rx.Observable.flatMapCompletable() (3 overloads)
• rx.Observable.flatMapSingle() (3 overloads)
• rx.Observable.groupBy(Func1, Func1, Func1<Action1<K>, Map<K, Object>>)
• rx.Observable.onTerminateDetach()
• rx.Observable.rebatchRequests()
• rx.Observable.subscribeOn(Scheduler, boolean)
• rx.Observable.sorted()
• rx.Observable.sorted(Func2)
• rx.Observable.withLatestFrom() (10 overloads)
• rx.Observable.test() (2 overloads)

Promote Beta to stable:

• rx.observable.BlockingObservable.subscribe() (6 overloads)
• rx.exceptions.CompositeException(Throwable...)
• rx.exceptions.Exceptions.throwOrReport() (4 overloads)
• rx.BackpressureOverflow
• rx.Single.onErrorResumeNext() (3 overloads)
• rx.Single.toCompletable()
• rx.Single.doOnError()
• rx.Single.doOnSubscribe()
• rx.Single.delay() (2 overloads)
• rx.Single.defer()
• rx.Single.doOnUnsubscribe()
• rx.Single.doAfterTerminate()
• rx.Single.flatMapCompletable()
• rx.Single.lift()
• rx.Single.toBlocking()
• rx.Single.using() (2 overloads)
• rx.Single.delaySubscription(Observable)
• rx.plugins.RxJavaErrorHandler.handleOnNextValueRendering()
• rx.plugins.RxJavaErrorHandler.render()
• rx.singles.BlockingSingle
• rx.Observable.toCompletable()
• rx.Observable.concatDelayError() (10 overloads)
• rx.Observable.mergeDelayError()
• rx.Observable.switchOnNextDelayError()
• rx.Observable.using(Func0, Func1, Action1, boolean)
• rx.Observable.concatMapDelayError()
• rx.Observable.delaySubscription(Observable)
• rx.Observable.distinctUntilChanged(Func2)
• rx.Observable.concatEager() (12 overloads)
• rx.Observable.concatMapEager() (3 overloads)
• rx.Observable.onBackpressureBuffer(long, Action0, BackpressureOverflow.Strategy)
• rx.Observable.switchMapDelayError()
• rx.Observable.toSortedList(int)
• rx.Observable.toSortedList(Func2, int)
• rx.observables.SyncOnSubscribe.createSingleState() (2 overloads)
• rx.observables.SyncOnSubscribe.createStateful() (2 overloads)
• rx.observables.SyncOnSubscribe.createStateless() (2 overloads)
• rx.Completable

Promote Experimental to Beta

• rx.observable.AsyncOnSubscribe (+ 7 of its factory methods)
• rx.Observable.create(AsyncOnSubscribe<S, T>)

Leave as is

• rx.Single.unsubscribeOn (since 1.2.8)

Remove Experimental

• rx.Observable.fromEmitter()

[akarnokd]

Closing via #5318.