* master branch dev versions set to 6.1-dev

* introducing field aware trait and named builder interface

* Adding param `track_total_hits` (#273)

* Add getQuery Method to FunctionScoreQuery (#271)

* Add getQuery Method to FunctionScoreQuery

Add getQuery Method to FunctionScoreQuery in order to apply changes to query of FunctionScoreQuery.

* Update FunctionScoreQuery.php

* added new NestedSort for replacing deprecated nested_filter and nested_path (#267)

* added new NestedSort for replacing deprecated nested_filter and nested_path

* made the filter optional

* remove keyed option condition for to have range key

* update readme version matrix

* fix php psr2 style issues in the FunctionScore class

* Initialize static serializer on wakeup