1.1.0-RC1 Release notes (#894)

docs/src/main/paradox/release-notes/1.1.x.md

@@ -0,0 +1,42 @@
+---
+project.description: Release notes for all Alpakka Kafka 1.1.x releases.
+---
+# Alpakka Kafka 1.1.x
+
+@@@ note
+In case you are browsing a specific version's documentation: check out the [latest release notes](https://doc.akka.io/docs/alpakka-kafka/current/release-notes/)
+@@@
+
+# 1.1.0-RC1
+
+Released: 2019-09-05
+
+Alpakka Kafka 1.1 changes the internals of how offset commits are sent to the Kafka broker. The new implementation is very beneficial for high-throughput consumers as committing is now connected to the regular polling of the Kafka consumer, which reduces pressure on Kafka.
+
+As a new experimental feature, offset committing is now possible without applying backpressure to the stream when commits are not processed at the same speed. This can be controlled via the `delivery` committer setting.
+
+Exceptions from the Kafka consumer API are now properly passed back and fail the stream.
+
+This goes along with a few improvements to the documentation.
+
+**If we do not get any reports that speak against it, we'll release Alpakka Kafka 1.1.0 in a few weeks.**
+
+## Notable changes since 1.0.5
+
+- Aggregate offsets and commit before poll [#862](https://github.com/akka/alpakka-kafka/issues/862)
+- Special-casing single offset committing [#868](https://github.com/akka/alpakka-kafka/issues/868)
+- Introduce setting for committing without backpressure [#883](https://github.com/akka/alpakka-kafka/pull/883)
+- Capture exceptions from Kafka consumer and pass to involved stages [#887](https://github.com/akka/alpakka-kafka/pull/887)
+
+The detailed list of changes is found in [the 1.1.0-RC1 milestone](https://github.com/akka/alpakka-kafka/milestone/29?closed=1).
+
+This release is compiled and tested against [Akka 2.5](https://doc.akka.io/docs/akka/2.5/) for Scala 2.11, 2.12 and 2.13, [Akka 2.6-M6](https://doc.akka.io/docs/akka/2.6/) for Scala 2.12, and 2.13 and both Akka versions on Adopt OpenJDK 1.8 and 11.
+
+On this release contains contributions by:
+
+| Author | Commits | Lines added | Lines removed |
+| ------ | ------- | ----------- | ------------- |
+| [<img width="20" alt="ennru" src="https://avatars3.githubusercontent.com/u/458526?v=4&s=40"> **ennru**](https://github.com/ennru) | 25 | 947 | 369 |
+| [<img width="20" alt="2m" src="https://avatars3.githubusercontent.com/u/422086?v=4&s=40"> **2m**](https://github.com/2m) | 9 | 93 | 66 |
+| [<img width="20" alt="TimMoore" src="https://avatars0.githubusercontent.com/u/44385?v=4&s=40"> **TimMoore**](https://github.com/TimMoore) | 2 | 10 | 33 |
+| [<img width="20" alt="bwmcadams" src="https://avatars3.githubusercontent.com/u/98358?v=4&s=40"> **bwmcadams**](https://github.com/bwmcadams) | 1 | 1 | 1 |

docs/src/main/paradox/release-notes/index.md

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 @@@ index
 
+* [1.1.x](1.1.x.md)
 * [1.0.x](1.0.x.md)
 
 @@@