cosmetic: "stream" was a rather infortunate name ...
streams: pipe data through a lossy duplex stream

  The leaky stream prevents the client (destination stream) from applying
  back-pressure on the source.
  It uses a ring buffer to store incoming data. Should the destination be
  unable to keep up with the stream's speed, chunk loss will occur, but only
  affect this particular slow destination. Other clients will be fine and
  receive the full stream.

  Fixes #4
transcode: do not rely on through

  A native PassThrough stream works just fine