Dear Hakkers,

we—the Akka committers—are happy to announce the fourth maintenance release
of Akka Streams & HTTP 2.0
<http://akka.io/news/2015/12/21/akka-streams-2.0-released.html>. This
update addresses stability issues for those who can not upgrade to Akka
2.4.x.

Fixes in this release include:

* SubSource double push (#20157 <https://github.com/akka/akka/pull/20157>)
* UnzipWith double push (#20167 <https://github.com/akka/akka/pull/20167>)
* FileIO publisher double onComplete (#20168
<https://github.com/akka/akka/pull/20168>)
* Buffer overflow in Merge (#20170 <https://github.com/akka/akka/pull/20170>
)
* Sink.queue and Sink.actorRefWithAck mishandle of buffer of size one (
#20171 <https://github.com/akka/akka/pull/20171>)
* Sink.actorRefWithAck gets stuck when buffer runs full (#20156
<https://github.com/akka/akka/pull/20156>)
* Race condition in FileSubscriber (#20159
<https://github.com/akka/akka/pull/20159>)
* Fix for GraphStageLogic.readN (#20172
<https://github.com/akka/akka/pull/20172>)
* Added autoflushing to OutputStream sink (#20164
<https://github.com/akka/akka/pull/20164>)
* Timeouts with StreamConvertes.asInputStream (#20165
<https://github.com/akka/akka/pull/20165>)
* Fix where InputBuffer attribute was not used (#20187
<https://github.com/akka/akka/pull/20187>)
* Fix for content negotiation for non 2xx and Accept responses (#20178
<https://github.com/akka/akka/pull/20178>)

The full list of changes since the last milestone is available under
the stream-http-2.0.4
milestone on github
<https://github.com/akka/akka/issues?q=milestone%3Astream-http-2.0.4+is%3Aclosed>
for your reference.

The reference documentation for the 2.0.4 release can be found here for Java
<http://doc.akka.io/docs/akka-stream-and-http-experimental/2.0.4/java.html?_ga=1.224377435.1958946341.1452501189>
and Scala
<http://doc.akka.io/docs/akka-stream-and-http-experimental/2.0.4/scala.html?_ga=1.224377435.1958946341.1452501189>
.

If you are upgrading from the old 1.0.x series, you may want to read the
following migration guide for Java
<http://doc.akka.io/docs/akka-stream-and-http-experimental/2.0.4/java/migration-guide-1.0-2.x-java.html?_ga=1.224377435.1958946341.1452501189>
or migration guide for Scala
<http://doc.akka.io/docs/akka-stream-and-http-experimental/2.0.4/scala/migration-guide-1.0-2.x-scala.html?_ga=1.224377435.1958946341.1452501189>
.

Credits
commits added removed
      7   316     157 Roland Kuhn
      7   345      78 Johan Andrén
      5    62      16 Endre Sándor Varga
      3   142      22 Konrad Malawski
      1    80      25 Viktor Klang
      1    20       4 Alexander Golubev
      1     3       3 Martynas Mickevičius

Happy hakking,

– The Akka Team

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