Update build.gradle

don't deprecate, just remove and do a breaking release.

changed my mind, we won't deprecate these

Remove Java 8 targeting

combineLatest extensions for Observable and Flowable (ReactiveX#116)

* combineLatest extensions for Observable and Flowable

* jdk8

Merge branch 'sam-adapters' into 2.x

rename combineFunction to combiner

More operators for Observable<Single>, Flowable<Single>, etc. (Reacti…

…veX#101)

* add several more operators for Observable<Single>, Flowable<Single>, etc...

* remove import  io.reactivex.*

* rid plural maybes in operator name

* rid some operators targeting `Observable<Single>` and `Observable<Maybe>` and Flowable counterparts, out of scope

* update version to 2.0.0

remove `joinToString()` and `withIndex()` tests

set to new groupId