Bugfixes

• Set HTTP headers on each request preventing server error if persistent connection is enabled and compression enabled and later disabled for the same connection.
• Removed int type hinting in setMinimumMatch (Terms Query): it should also allow string. #1151

Added

• Elastica\QueryBuilder\DSL\Query::geo_distance
• Elastica\Aggregation\GeoCentroid #1150
• Multi value field param for decay function.
• Elastica\Client::getVersion #1152

Improvements

• Set PHP 7.0 as default development version
• Get the root reason from Elasticsearch's error JSON, when available #1111
• Optimize memory usage for Http Adapter #1161

Changed

• Remove JSON_ELASTICSEARCH constant as not needed anymore