RxJava 2.x & 3.x extra sources, operators and components and ports of many 1.x companion libraries.
Upgrade to RxJava 3.1.1
Upgrade to RxJava 3.0.0 final.
Upgrade to RxJava 3.0.0-RC8.
Upgrade to RxJava 3.0.0-RC6.
Upgrade to RxJava 3.0.0-RC5.
Upgrade to RxJava 3.0.0-RC4.
Upgrade to RxJava 3.0.0-RC3. Upgrade to Reactive Streams 1.0.3.
Upgrade to RxJava 3.0.0-RC1.