Replace New and Noteworthy with links to release notes.

Closes #1327
See spring-projects/spring-data-relational#1351

Author: schauder

README.adoc

@@ -116,7 +116,6 @@ Having trouble with Spring Data? We’d love to help!
 https://docs.spring.io/spring-data/cassandra/docs/current/reference/html/[reference documentation], and https://docs.spring.io/spring-data/cassandra/docs/current/api/[Javadocs].
 * Learn the Spring basics – Spring Data builds on Spring Framework, check the https://spring.io[spring.io] web-site for a wealth of reference documentation.
 If you are just starting out with Spring, try one of the https://spring.io/guides[guides].
-* If you are upgrading, check out the https://docs.spring.io/spring-data/cassandra/docs/current/changelog.txt[changelog] for "`new and noteworthy`" features.
 * Ask a question - we monitor https://stackoverflow.com[stackoverflow.com] for questions tagged with https://stackoverflow.com/tags/spring-data[`spring-data-cassandra`].
 You can also chat with the community on https://gitter.im/spring-projects/spring-data[Gitter].
 * Report bugs with Spring Data for Apache Cassandra at https://github.com/spring-projects/spring-data-cassandra/issues[github.com/spring-projects/spring-data-cassandra/issues].

src/main/asciidoc/index.adoc

@@ -14,7 +14,7 @@ ifdef::backend-epub3[:front-cover-image: image:epub-cover.png[Front Cover,1050,1
 NOTE: Copies of this document may be made for your own use and for distribution to others, provided that you do not charge any fee for such copies and further provided that each copy contains this Copyright Notice, whether distributed in print or electronically.
 
 include::preface.adoc[]
-
+include::{spring-data-commons-docs}/upgrade.adoc[leveloffset=+1]
 include::{spring-data-commons-docs}/dependencies.adoc[leveloffset=+1]
 include::{spring-data-commons-docs}/repositories.adoc[leveloffset=+1]