merge
merge
Stream('a').merge(Stream('b')).compile.toList
merge (with chunks)
Stream('a').merge(Stream('b')).compile.toList
parZip
Stream('a', 'b', 'c').parZip(Stream('d', 'e')).compile.drain
parZip (with chunks)
Stream('a', 'b', 'c').parZip(Stream('d', 'e')).compile.drain