promote Observer.create(onNext) note about onError to sentence #1 of javadoc description (#1847)
advanced javadoc formatting yoga in GroupedObservable class description (#1846)
In javadocs, warn developers away from using BlockingObservable in production code (#1844)
in BlockingObservable.forEach() javadoc, clarify what happens in case of error notification from underlying Observable (#1844)
overridden onFoo() methods in Subscriber subclasses need their own javadocs (#1849 #1850).
Also: Observer javadocs are a bit too groovy.
Make the javadoc descriptions of various Exception implementations parallel one another better (#1841)
Add missing javadoc interface descriptions for some ActionN variants (#1842)
Add missing javadoc interface descriptions for the various FuncN variants (#1843)