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=== What's new in Apache Unomi 3.0

Apache Unomi 3 is a new release focused on integrations of the client to support elasticsearch version 9.
It also include the upgrade of the Karaf version.

=== Elasticsearch client upgrade

The official client for Elasticsearch has been added to Apache Unomi in version 3.0 in order to replace the old rest-client which
is not supported anymore.

The documentation of the client can be found here: https://www.elastic.co/docs/reference/elasticsearch/clients/java

===  Elasticsearch 7 data migration

A procedure to migrate your data from Elasticsearch 7 to Elasticsearch 9 can be found in the <<Migrate from Elasticsearch 7 to Elasticsearch 9>> section

=== Karaf upgrade

The Karaf version has been upgraded from 4.2.15 to 4.4.8 in order to support the latest versions of the dependencies.
This upgrade also brings support for Java 17.
