Since the OSGi update #6675, packaging the jar gives the [following warning](https://travis-ci.org/ReactiveX/RxJava/builds/620101751#L239): ``` warning: Export io.reactivex.rxjava3.disposables, has 1, private references [io.reactivex.rxjava3.internal.disposables] ``` I don't know why this package gets a warning but not `core`. /cc @io7m