### Version 1.2.8 - March 24, 2017 ([Maven](http://search.maven.org/#artifactdetails%7Cio.reactivex%7Crxjava%7C1.2.8%7C)) #### API enhancements - [Pull 5146](https://github.com/ReactiveX/RxJava/pull/5146): Add `Single.unsubscribeOn`. - [Pull 5195](https://github.com/ReactiveX/RxJava/pull/5195): Enhance `UnicastSubject` with optional delay error behavior. #### Bugfixes - [Pull 5141](https://github.com/ReactiveX/RxJava/pull/5141): Fix timed `replay()` not terminating when all items timeout. - [Pull 5181](https://github.com/ReactiveX/RxJava/pull/5181): `replay().refCount()` avoid leaking items between connections.