allow 0 and Int.max to create an ReplaySubject with unlimited capacity
allow 0 and Int.max to create an ReplaySubject with unlimited capacity

tottakai/RxSwift,KyoheiG3/RxSwift,shiratsu/RxSwift,hsoi/RxSwift,hsoi/RxSwift,ReactiveX/RxSwift,tottakai/RxSwift,cfraz89/RxSwift,KyoheiG3/RxSwift,ashfurrow/RxSwift,shiratsu/RxSwift,kzaher/RxSwift,hsoi/RxSwift,thanegill/RxSwift,petester42/RxSwift,thanegill/RxSwift,petester42/RxSwift,shiratsu/RxSwift,ReactiveX/RxSwift,petester42/RxSwift,kzaher/RxSwift,cfraz89/RxSwift,petester42/RxSwift,kzaher/RxSwift,ashfurrow/RxSwift,thanegill/RxSwift,cfraz89/RxSwift,thanegill/RxSwift,ReactiveX/RxSwift,hsoi/RxSwift,ashfurrow/RxSwift,KyoheiG3/RxSwift,kzaher/RxSwift,ashfurrow/RxSwift,tottakai/RxSwift,cfraz89/RxSwift