The CustomSerializer class was made final, so the CustomReferencedNormalizer
class must be updated to use composition over inheritance

* 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

There are situation where adding multiple queries is super beneficial. 

This PR enables package users to call `$search->addQueries(...)` in two different ways.

#### Single dimension array parameter

In this case an array of `BuilderInterface $query` are passed to the root `$search->addQuery()` function.

#### Multi dimensional array parameter

In this case an array of arrays is passed in, each member of the array is to match the function signature of `$search->addQuery()` and the PHP 5.4 traversable unpacking language feature is used to parameterise the root `$search->addQuery()` function.

'_source_exclude' and '_source_include' was missing in parameters whitelist.

* bump development version number

* add scroll to URI parameters, fixes #201

* remove deprecated queries

* move tests

* added support for 5.x elasticsearch syntax

changed script_score lang to painless

* refactored tests to support elastic 5

* update changelog

* uri parameters was moved to container, introduced 5.0 new request body parameters

* removed filter endpoint, change order for query and postfilter

* search test has too many not necessary test cases

All those tests has to be in specific query or endpoint. Also functional tests make more sense then asserting it in the SearchTest

* moving elasticsearch/elasticsearch to required dependencies

Also removed unused imports