Update documentation before 1.4.0.RC1

Author: acogoluegnes

src/docs/asciidoc/getting-started.adoc

@@ -137,7 +137,7 @@ For gradle:
 [source,groovy]
 --------
 dependencies {
-    compile "io.projectreactor.rabbitmq:reactor-rabbitmq:1.3.0.RELEASE"
+    compile "io.projectreactor.rabbitmq:reactor-rabbitmq:1.4.0.RC1"
 }
 --------
 
@@ -149,7 +149,7 @@ For Maven:
 <dependency>
     <groupId>io.projectreactor.rabbitmq</groupId>
     <artifactId>reactor-rabbitmq</artifactId>
-    <version>1.3.0.RELEASE</version>
+    <version>1.4.0.RC1</version>
 </dependency>
 --------
 

src/docs/asciidoc/new.adoc

@@ -2,6 +2,12 @@
 
 [[new]]
 
+=== What's new in Reactor RabbitMQ 1.4
+
+* Add `@NonNullApi` and `@Nullable` annotations
+* Add `Sender#sendWithTypedPublishConfirms` to be able to publish `OutboundMessage` instances
+of a custom class and get them back in the flux of `OutboundMessageResult`
+
 === What's new in Reactor RabbitMQ 1.3
 
 * Use Reactor 3.3.0.RELEASE