Updated What's different in 3.0 (markdown)
Updated Operator Matrix (markdown)
Add concatEager[DelayError] mables
Readd Maybe.defaultIfEmpty
Bad caps remove
Add remaining missing Maybe marbles
Add M/S flatMap combiner & S notification marbles
Add switchMapMaybeX, fix Completable.concatArrayDelayError marbles
Fix alignment mistakes in onErrorReturn[Item] marbles
Update onErrorReturn marble