Merge branch 'master' into docs

composer.json

src/Search.php

src/SearchEndpoint/AbstractSearchEndpoint.php

src/SearchEndpoint/QueryEndpoint.php

src/Serializer/Normalizer/AbstractNormalizable.php

src/Serializer/Normalizer/CustomReferencedNormalizer.php

src/Serializer/Normalizer/OrderedNormalizerInterface.php

src/Serializer/OrderedSerializer.php

tests/SearchEndpoint/QueryEndpointTest.php

tests/SearchTest.php