Reduce number of docs in test for #4093 - 30 docs are enough to trigger the bug
Add wabisabi to Scala clients.
_default_ mapping not applied when using separate master/data nodes
fixes #4124
Unable to create a nested filtered alias on a dataless master
fixes #4112
Added support for external query in postings highlighter

It is now possible to highlight an external query using the postings highlighter, relates to #3630

Closes #4121
In ctor of GeoPointFieldMapper, geohash_prefix now implicitly enables geohash option
Also improved docs for geopoint type and geohash_cell filte

Closes #3951
fix issues with JAVA_OPTS/ES_JAVA_OPTS in service.bat

fix handling of non-empty JAVA_OPTS
remove usage of if/else that can be tripped by parenthesis in the variable
fixes #4127
closes #4086

(cherry picked from commit fb44e9aef76026f2269f1fdc8832a44f8c76ec8f)
Initial implementation of Snapshot/Restore API

Closes #3826