Release 1.1.4 preparations #3894

Version 1.1.4 - May 4, 2016 (Maven)

API enhancements

• Pull 3856: Provide factories for creating the default scheduler instances.
• Pull 3866: Add Single.toCompletable().
• Pull 3879: Expose scheduler factories which accept thread factories.
• Pull 3820: Making RxPlugins reset() public
• Pull 3888: new operator: onTerminateDetach - detach upstream/downstream for GC

API deprecations

• Pull 3871: Deprecate remaining public scheduler types.

Performance enhancements

• Pull 3761: optimize merge/flatMap for empty sources.
• Pull 3864: optimize concatMapIterable/flatMapIterable.

Bugfixes

• Pull 3868: Fix an unsubscribe race in EventLoopWorker.
• Pull 3867: ensure waiting tasks are cancelled on worker unsubscription.
• Pull 3862: fix from(Iterable) error handling of Iterable/Iterator
• Pull 3886: throwIfFatal() now throws OnCompletedFailedException.
• Pull 3887: Have undeliverable errors on subscribe() sent to plugin error handler.
• Pull 3895: cast() should unsubscribe on crash eagerly.
• Pull 3896: OperatorMapPair should unsubscribe on crash eagerly.
• Pull 3890: map() and filter() should unsubscribe on crash eagerly.
• Pull 3893: enable backpressure with from(Future)
• Pull 3883: fix multiple chained Single.doAfterTerminate not calling actions
• Pull 3904: Fix Completable swallows OnErrorNotImplementedException
• Pull 3905: fix singleOrDefault() backpressure if source is empty