0.1.5

• Commit b721893c: Add SchedulerMultiWorkerSupport as contributed to RxJava.
• Commit 98ef7a36: Fix ProcessorRefCount cancellation management and MulticastProcessor fusion interop.
• Commit ea678cad: Upgrade to Reactive Streams 1.0.2 final (for its Test-Compatibility-Kit).
• Commit 0b2c2c31: Fix retry request accounting.
• Commit 70f23c15: Fix flatMap not cancelling the upstream on inner poll() crash.