Fix mentioning of the deprecated ListenableFuture

* Some rearranging fixes for `nav.adoc` and `appendix\previous-whats-new` dir

Author: artembilan

src/reference/antora/modules/ROOT/nav.adoc

@@ -71,14 +71,11 @@
 *** xref:appendix/previous-whats-new/changes-in-3-1-since-3-0.adoc[]
 *** xref:appendix/previous-whats-new/changes-in-3-0-since-2-4.adoc[]
 *** xref:appendix/previous-whats-new/changes-in-2-4-since-2-3.adoc[]
-*** xref:appendix/previous-whats-new/message-converter-changes.adoc[]
-*** xref:appendix/previous-whats-new/stream-support-changes.adoc[]
 *** xref:appendix/previous-whats-new/changes-in-2-3-since-2-2.adoc[]
 *** xref:appendix/previous-whats-new/changes-in-2-2-since-2-1.adoc[]
 *** xref:appendix/previous-whats-new/changes-in-2-1-since-2-0.adoc[]
 *** xref:appendix/previous-whats-new/changes-in-2-0-since-1-7.adoc[]
 *** xref:appendix/previous-whats-new/changes-in-1-7-since-1-6.adoc[]
-*** xref:appendix/previous-whats-new/earlier-releases.adoc[]
 *** xref:appendix/previous-whats-new/changes-in-1-6-since-1-5.adoc[]
 *** xref:appendix/previous-whats-new/changes-in-1-5-since-1-4.adoc[]
 *** xref:appendix/previous-whats-new/changes-in-1-4-since-1-3.adoc[]

src/reference/antora/modules/ROOT/pages/amqp/request-reply.adoc

@@ -290,8 +290,6 @@ Version 2.0 introduced variants of these methods (`convertSendAndReceiveAsType`)
 You must configure the underlying `RabbitTemplate` with a `SmartMessageConverter`.
 See xref:amqp/message-converters.adoc#json-complex[Converting From a `Message` With `RabbitTemplate`] for more information.
 
-IMPORTANT: Starting with version 3.0, the `AsyncRabbitTemplate` methods now return `CompletableFuture` s instead of `ListenableFuture` s.
-
 [[remoting]]
 == Spring Remoting with AMQP
 

src/reference/antora/modules/ROOT/pages/appendix/previous-whats-new/changes-in-2-4-since-2-3.adoc

@@ -22,3 +22,15 @@ See xref:amqp/broker-configuration.adoc#declarable-recovery[Recovering Auto-Dele
 
 Support remoting using Spring Framework’s RMI support is deprecated and will be removed in 3.0. See Spring Remoting with AMQP for more information.
 
+[[stream-support-changes]]
+== Stream Support Changes
+
+`RabbitStreamOperations` and `RabbitStreamTemplate` have been deprecated in favor of `RabbitStreamOperations2` and `RabbitStreamTemplate2` respectively; they return `CompletableFuture` instead of `ListenableFuture`.
+See xref:stream.adoc[Using the RabbitMQ Stream Plugin] for more information.
+
+[[message-converter-changes]]
+== Message Converter Changes
+
+The `Jackson2JsonMessageConverter` can now determine the charset from the `contentEncoding` header.
+See xref:amqp/message-converters.adoc#json-message-converter[`Jackson2JsonMessageConverter`] for more information.
+

src/reference/antora/modules/ROOT/pages/appendix/previous-whats-new/earlier-releases.adoc

@@ -111,8 +111,6 @@ The `ProducerCustomizer` provides a mechanism to customize the producer before i
 
 Refer to the {rabbitmq-stream-docs}[Java Client Documentation] about customizing the `Environment` and `Producer`.
 
-IMPORTANT: Starting with version 3.0, the method return types are `CompletableFuture` instead of `ListenableFuture`.
-
 [[receiving-messages]]
 == Receiving Messages