Release 2.2.0

Backward Compatibility Breaks

• Usage of constant DEBUG and method Elastica\Util::debugEnabled is removed. #868
• Elastica\Response::getTransferInfo will not return "request_header" by default. #868
• The Image Plugin is currently not compatible with Elasticearch 1.6.0

Bugfixes

• Fixed segmentation fault in PHP7 #868
• Removed deprecation for Elastica\Type::deleteByQuery #875

Improvements

• CallbackStrategy now will accept any callable as callback, not only instance of Closure. #871
• StrategyFactory now will try to find predefined strategy before looking to global namespace. #877
• Update elasticsearch dependency to elasticsearch 1.6.0 https://www.elastic.co/downloads/past-releases/elasticsearch-1-6-0
• All elasticsearch plugin dependencies were updated to the newest version.
• Methods of classes in QueryBuilder\DSL namespace now have exact same signatures as corresponding constructors. #878
• Constructor of Aggregation\Filter now accepts filter as second parameter #878
• Constructor of Filter\AbstractMulti (BoolAnd, BooldOr) now accepts array of filters as parameter #878
• Constructor of Query\Match now accepts arguments #878
• Coverage Reporting improved with Codecov #888
• Added 'query_cache' option for search #886