Commits on Jul 22, 2013

1. stream: Simplify flowing, passive data listening …

   Closes nodejs#5860
   
   In streams2, there is an "old mode" for compatibility.  Once switched
   into this mode, there is no going back.
   
   With this change, there is a "flowing mode" and a "paused mode".  If you
   add a data listener, then this will start the flow of data.  However,
   hitting the `pause()` method will switch *back* into a non-flowing mode,
   where the `read()` method will pull data out.
   
   Every time `read()` returns a data chunk, it also emits a `data` event.
   In this way, a passive data listener can be added, and the stream passed
   off to some other reader, for use with progress bars and the like.
   
   There is no API change beyond this added flexibility.

   

   isaacs committed Jul 22, 2013
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