Added multi_field option on demand refs #18190
Update README.rst with multi_list refs - #18190
Changes for performance upgrades refs #18190
Merge branch 'sprint3' of github.com:eea/eea.elasticsearch.river.rdf into sprint3
Update README.rst
Update README.rst
Last fixes for  #18190
Merge branch 'sprint3' of github.com:eea/eea.elasticsearch.river.rdf into sprint3
Added multi_field option on demand refs #18190
Update README.rst with multi_list refs - #18190
Changes for performance upgrades refs #18190
Update README.rst
Update README.rst
Last fixes for  #18190
Rebase