Upgraded Norconex Committer to 2.0.0 and updated the code accordingly.
Unit test tweaks.
Explicitely set document.reference as id in unit tests
Updated to support contentTargetField and sourceReferenceField
Upgraded to latest Elasticsearch version
Updated classed affected by removal of Serializer obligation in Norocnex
Commons Lang.
Sonar improvements.
Now references committer-core.
Site creation taken out of this project.  Only some generated artifacts
remain.
Site creation taken out of this project.  Only some generated artifacts
remain.
Renaming of some AbstractMappedCommitter properties for naming
consistency.
Now licensed under The Apache License, Version 2.0.
Typos.
Typo.
typo.
Updated snapshot dependencies to stable releases.
Fixed unit test and prepare for release.
Javadoc fix.