Add unreleased v5.6.6 version
Add unreleased v5.6.6 version

vroyer/elassandra,vroyer/elasticassandra,vroyer/elassandra,strapdata/elassandra,strapdata/elassandra,strapdata/elassandra,strapdata/elassandra,vroyer/elasticassandra,vroyer/elassandra,strapdata/elassandra,vroyer/elasticassandra