New upstream version 3.4.2

Cache/CacheInterface.php

Cache/CacheTrait.php

EventDispatcher/EventDispatcherInterface.php

HttpClient/HttpClientInterface.php

HttpClient/ResponseInterface.php

HttpClient/Test/HttpClientTestCase.php

HttpClient/Test/TestHttpServer.php

Service/Test/ServiceLocatorTestCase.php

Translation/Test/TranslatorTest.php

Translation/TranslatableInterface.php

Translation/TranslatorInterface.php

Translation/TranslatorTrait.php

composer.json