0.13.0

• Add no arg Nono.subscriber() method
• Add no arg Nono.blockingSubscribe() method
• Add Nono.create factory method
• Implement Solo, the 1-error Reactive-Streams Publisher-based implementation of a Single. See examples.
• Implement SoloProcessor, the hot version of Solo. See example 1 and example 2.
• Add FlowableTransformers.onBackpressureTimeout: add a timeout to unclaimed buffered items in case the downstream can't consume fast enough. See example.
• Add StringFlowable.split that splits a sequence of strings with a Regexp as if the sequence were of one big string (that is, individual strings don't count as split by themselves). See example.