Prepare release 1.9.0

README.md

@@ -6,10 +6,10 @@
 akka-http-json provides JSON (un)marshalling support for [Akka](http://akka.io) HTTP. It offers support for the following JSON libraries:
 - [Argonaut](http://argonaut.io)
 - [circe](https://github.com/travisbrown/circe)
+- [Jackson](https://github.com/FasterXML/jackson) via [Scala Module](https://github.com/FasterXML/jackson-module-scala) by default
 - [Json4s](https://github.com/json4s/json4s)
 - [Play JSON](https://www.playframework.com/documentation/2.5.x/ScalaJson)
 - [uPickle](https://github.com/lihaoyi/upickle-pprint)
-- [Jackson](https://github.com/FasterXML/jackson) via [Scala Module](https://github.com/FasterXML/jackson-module-scala) by default
 
 ## Installation
 
@@ -21,7 +21,7 @@ Grab it while it's hot:
 resolvers += Resolver.bintrayRepo("hseeberger", "maven")
 
 libraryDependencies ++= List(
-  "de.heikoseeberger" %% "akka-http-circe" % "1.8.0",
+  "de.heikoseeberger" %% "akka-http-circe" % "1.9.0",
   ...
 )
 ```