experience trying out lambda-8-b74

[Brian Goetz]

> Wouldn't it be better also for
> the stream-factory methods to throw UncheckedIOException and for
> CloseableStream.close() to also throw UncheckedIOException (that means,
> only inheriting from AutoCloseable, not Closeable and co-variant-ly
> redefining the throws declaration):
>
> public interface CloseableStream<T> extends Stream<T>, AutoCloseable {

Already there :)