Search Guard v8

Release Date: November 10, 2016

Add support for Elasticsearch 5
Add .bat files for Windows operating system
Add standalone version of sgadmin
fixed a bug with tribe nodes where node where counted wrong
Fix sgadmin.sh –update_settings together with –configdir #228
Fix DLS/FLS index association issue
Handle composite requests in that way, that permission violations will be reported on subrequest level
Fix initialization issue with auditlog module when ES license plugin is installed