Command and Result objects instead of
Request and Response objectsHandlerStack instance than the
HTTP middleware.Result objects are the result of executing a Command and are used to hold
the parsed response data.guzzlehttp/promises package instead of
guzzlehttp/ringphp, which means that asynchronous results are implemented
as Promises/A+ compliant Promise objects, instead of futures.Subscribers were removed.ServiceClientInterface and ServiceClient class now provide the basic
foundation of a web service client.setConfig from ServiceClientInterface.initTransaction to ServiceClientInterface.goto
statement.prepare event to prepared.init event.batch() to ServiceClientInterface for sending commands in batches