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diff --git a/vendor/zendframework/zend-diactoros/src/Response/Serializer.php b/vendor/zendframework/zend-diactoros/src/Response/Serializer.php
new file mode 100644
index 000000000..1d48dc106
--- /dev/null
+++ b/vendor/zendframework/zend-diactoros/src/Response/Serializer.php
@@ -0,0 +1,110 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @see       http://github.com/zendframework/zend-diactoros for the canonical source repository
+ * @copyright Copyright (c) 2015-2016 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-diactoros/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Diactoros\Response;
+
+use InvalidArgumentException;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\StreamInterface;
+use UnexpectedValueException;
+use Zend\Diactoros\AbstractSerializer;
+use Zend\Diactoros\Response;
+use Zend\Diactoros\Stream;
+
+final class Serializer extends AbstractSerializer
+{
+    /**
+     * Deserialize a response string to a response instance.
+     *
+     * @param string $message
+     * @return Response
+     * @throws UnexpectedValueException when errors occur parsing the message.
+     */
+    public static function fromString($message)
+    {
+        $stream = new Stream('php://temp', 'wb+');
+        $stream->write($message);
+        return static::fromStream($stream);
+    }
+
+    /**
+     * Parse a response from a stream.
+     *
+     * @param StreamInterface $stream
+     * @return Response
+     * @throws InvalidArgumentException when the stream is not readable.
+     * @throws UnexpectedValueException when errors occur parsing the message.
+     */
+    public static function fromStream(StreamInterface $stream)
+    {
+        if (! $stream->isReadable() || ! $stream->isSeekable()) {
+            throw new InvalidArgumentException('Message stream must be both readable and seekable');
+        }
+
+        $stream->rewind();
+
+        list($version, $status, $reasonPhrase) = self::getStatusLine($stream);
+        list($headers, $body)                  = self::splitStream($stream);
+
+        return (new Response($body, $status, $headers))
+            ->withProtocolVersion($version)
+            ->withStatus((int) $status, $reasonPhrase);
+    }
+
+    /**
+     * Create a string representation of a response.
+     *
+     * @param ResponseInterface $response
+     * @return string
+     */
+    public static function toString(ResponseInterface $response)
+    {
+        $reasonPhrase = $response->getReasonPhrase();
+        $headers      = self::serializeHeaders($response->getHeaders());
+        $body         = (string) $response->getBody();
+        $format       = 'HTTP/%s %d%s%s%s';
+
+        if (! empty($headers)) {
+            $headers = "\r\n" . $headers;
+        }
+
+        $headers .= "\r\n\r\n";
+
+        return sprintf(
+            $format,
+            $response->getProtocolVersion(),
+            $response->getStatusCode(),
+            ($reasonPhrase ? ' ' . $reasonPhrase : ''),
+            $headers,
+            $body
+        );
+    }
+
+    /**
+     * Retrieve the status line for the message.
+     *
+     * @param StreamInterface $stream
+     * @return array Array with three elements: 0 => version, 1 => status, 2 => reason
+     * @throws UnexpectedValueException if line is malformed
+     */
+    private static function getStatusLine(StreamInterface $stream)
+    {
+        $line = self::getLine($stream);
+
+        if (! preg_match(
+            '#^HTTP/(?P<version>[1-9]\d*\.\d) (?P<status>[1-5]\d{2})(\s+(?P<reason>.+))?$#',
+            $line,
+            $matches
+        )) {
+            throw new UnexpectedValueException('No status line detected');
+        }
+
+        return [$matches['version'], $matches['status'], isset($matches['reason']) ? $matches['reason'] : ''];
+    }
+}