Add release notes for 1.0.5 (#854)

Add release notes for 1.0.5

docs/src/main/paradox/release-notes/1.0.x.md

@@ -4,6 +4,26 @@
 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/index.html)
 @@@
 
+# 1.0.5
+
+Released: 2019-07-25
+
+## Notable changes since 1.0.4
+
+* `FlowWithContext` support [#780](https://github.com/akka/alpakka-kafka/pull/780)
+* Added connection to broker status checker [#674](https://github.com/akka/alpakka-kafka/issues/674) 
+
+This release is compiled and tested against Akka [2.5](https://doc.akka.io/docs/akka/2.5/), [2.6](https://akka.io/blog/news/2019/04/12/akka-2.6-roadmap) and Scala 2.11, 2.12, 2.13.0 on Adopt OpenJDK 8 and 11.
+
+This release was made possible by:
+
+| Author | Commits | Lines added | Lines removed |
+| ------ | ------- | ----------- | ------------- |
+| [<img width="20" alt="2m" src="https://avatars3.githubusercontent.com/u/422086?v=4&amp;s=40"/> **2m**](https://github.com/2m) | 13 | 629 | 213 |
+| [<img width="20" alt="ennru" src="https://avatars3.githubusercontent.com/u/458526?v=4&amp;s=40"/> **ennru**](https://github.com/ennru) | 7 | 1327 | 203 |
+| [<img width="20" alt="tayvs" src="https://avatars1.githubusercontent.com/u/14348912?v=4&amp;s=40"/> **tayvs**](https://github.com/tayvs) | 1 | 397 | 9 |
+| [<img width="20" alt="lomigmegard" src="https://avatars1.githubusercontent.com/u/434236?v=4&amp;s=40"/> **lomigmegard**](https://github.com/lomigmegard) | 1 | 1 | 1 |
+
 # 1.0.4
 
 Released: 2019-06-11