elastic/elasticsearch-php v7.0.0 on GitHub

Requirement of PHP 7.1 instead of 7.0 that is not supported since 1st Jan 2019 #897
Code refactoring using type hints and return type declarations where possible #897
Update vendor libraries (PHPUnit 7.5, Symfony YAML 4.3, etc) #897
Updated all the API endpoints using the latest 7.0.0 specs of Elasticsearch #897
Added the User-Agent in each HTTP request #898
Simplified the logging methods logRequestFail($request, $response, $exception)
and logRequestSuccess($request, $response) in Elasticsearch\Connections\Connection
#876
Fix json_encode for unicode(emoji) characters 856
Fix HTTP port specification using CURLOPT_PORT, not anymore in the host 782

Breaking changes

Requirement of PHP 7.1 instead of 7.0 that is not supported since 1 Jan 2019.
See PHP supported version for more information.
Elasticsearch 7.0 deprecated APIs that accept types, introduced new typeless
APIs, and removed support for the default mapping. Read this blog post for more information.
Added type hints and return type declarations where possible #897