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diff --git a/vendor/swiftmailer/classes/Swift/Signers/DKIMSigner.php b/vendor/swiftmailer/classes/Swift/Signers/DKIMSigner.php
deleted file mode 100644
index 7e3f215f..00000000
--- a/vendor/swiftmailer/classes/Swift/Signers/DKIMSigner.php
+++ /dev/null
@@ -1,689 +0,0 @@
-<?php
-
-/*
- * This file is part of SwiftMailer.
- * (c) 2004-2009 Chris Corbyn
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * DKIM Signer used to apply DKIM Signature to a message
- *
- * @author     Xavier De Cock <xdecock@gmail.com>
- */
-class Swift_Signers_DKIMSigner implements Swift_Signers_HeaderSigner
-{
-    /**
-     * PrivateKey
-     *
-     * @var string
-     */
-    protected $_privateKey;
-
-    /**
-     * DomainName
-     *
-     * @var string
-     */
-    protected $_domainName;
-
-    /**
-     * Selector
-     *
-     * @var string
-     */
-    protected $_selector;
-
-    /**
-     * Hash algorithm used
-     *
-     * @var string
-     */
-    protected $_hashAlgorithm = 'rsa-sha1';
-
-    /**
-     * Body canon method
-     *
-     * @var string
-     */
-    protected $_bodyCanon = 'simple';
-
-    /**
-     * Header canon method
-     *
-     * @var string
-     */
-    protected $_headerCanon = 'simple';
-
-    /**
-     * Headers not being signed
-     *
-     * @var array
-     */
-    protected $_ignoredHeaders = array();
-
-    /**
-     * Signer identity
-     *
-     * @var unknown_type
-     */
-    protected $_signerIdentity;
-
-    /**
-     * BodyLength
-     *
-     * @var int
-     */
-    protected $_bodyLen = 0;
-
-    /**
-     * Maximum signedLen
-     *
-     * @var int
-     */
-    protected $_maxLen = PHP_INT_MAX;
-
-    /**
-     * Embbed bodyLen in signature
-     *
-     * @var bool
-     */
-    protected $_showLen = false;
-
-    /**
-     * When the signature has been applied (true means time()), false means not embedded
-     *
-     * @var mixed
-     */
-    protected $_signatureTimestamp = true;
-
-    /**
-     * When will the signature expires false means not embedded, if sigTimestamp is auto
-     * Expiration is relative, otherwhise it's absolute
-     *
-     * @var int
-     */
-    protected $_signatureExpiration = false;
-
-    /**
-     * Must we embed signed headers?
-     *
-     * @var bool
-     */
-    protected $_debugHeaders = false;
-
-    // work variables
-    /**
-     * Headers used to generate hash
-     *
-     * @var array
-     */
-    protected $_signedHeaders = array();
-
-    /**
-     * If debugHeaders is set store debugDatas here
-     *
-     * @var string
-     */
-    private $_debugHeadersData = '';
-
-    /**
-     * Stores the bodyHash
-     *
-     * @var string
-     */
-    private $_bodyHash = '';
-
-    /**
-     * Stores the signature header
-     *
-     * @var Swift_Mime_Headers_ParameterizedHeader
-     */
-    protected $_dkimHeader;
-
-    /**
-     * Hash Handler
-     *
-     * @var hash_ressource
-     */
-    private $_headerHashHandler;
-
-    private $_bodyHashHandler;
-
-    private $_headerHash;
-
-    private $_headerCanonData = '';
-
-    private $_bodyCanonEmptyCounter = 0;
-
-    private $_bodyCanonIgnoreStart = 2;
-
-    private $_bodyCanonSpace = false;
-
-    private $_bodyCanonLastChar = null;
-
-    private $_bodyCanonLine = '';
-
-    private $_bound = array();
-
-    /**
-     * Constructor
-     *
-     * @param string $privateKey
-     * @param string $domainName
-     * @param string $selector
-     */
-    public function __construct($privateKey, $domainName, $selector)
-    {
-        $this->_privateKey = $privateKey;
-        $this->_domainName = $domainName;
-        $this->_signerIdentity = '@' . $domainName;
-        $this->_selector = $selector;
-    }
-
-    /**
-     * Instanciate DKIMSigner
-     *
-     * @param string $privateKey
-     * @param string $domainName
-     * @param string $selector
-     * @return Swift_Signers_DKIMSigner
-     */
-    public static function newInstance($privateKey, $domainName, $selector)
-    {
-        return new static($privateKey, $domainName, $selector);
-    }
-
-
-    /**
-     * Reset the Signer
-     * @see Swift_Signer::reset()
-     */
-    public function reset()
-    {
-        $this->_headerHash = null;
-        $this->_signedHeaders = array();
-        $this->_headerHashHandler = null;
-        $this->_bodyHash = null;
-        $this->_bodyHashHandler = null;
-        $this->_bodyCanonIgnoreStart = 2;
-        $this->_bodyCanonEmptyCounter = 0;
-        $this->_bodyCanonLastChar = null;
-        $this->_bodyCanonSpace = false;
-    }
-
-    /**
-     * Writes $bytes to the end of the stream.
-     *
-     * Writing may not happen immediately if the stream chooses to buffer.  If
-     * you want to write these bytes with immediate effect, call {@link commit()}
-     * after calling write().
-     *
-     * This method returns the sequence ID of the write (i.e. 1 for first, 2 for
-     * second, etc etc).
-     *
-     * @param string $bytes
-     * @return int
-     * @throws Swift_IoException
-     */
-    public function write($bytes)
-    {
-        $this->_canonicalizeBody($bytes);
-        foreach ($this->_bound as $is) {
-            $is->write($bytes);
-        }
-    }
-
-    /**
-     * For any bytes that are currently buffered inside the stream, force them
-     * off the buffer.
-     *
-     * @throws Swift_IoException
-     */
-    public function commit()
-    {
-        // Nothing to do
-        return;
-    }
-
-    /**
-     * Attach $is to this stream.
-     * The stream acts as an observer, receiving all data that is written.
-     * All {@link write()} and {@link flushBuffers()} operations will be mirrored.
-     *
-     * @param Swift_InputByteStream $is
-     */
-    public function bind(Swift_InputByteStream $is)
-    {
-        // Don't have to mirror anything
-        $this->_bound[] = $is;
-
-        return;
-    }
-
-    /**
-     * Remove an already bound stream.
-     * If $is is not bound, no errors will be raised.
-     * If the stream currently has any buffered data it will be written to $is
-     * before unbinding occurs.
-     *
-     * @param Swift_InputByteStream $is
-     */
-    public function unbind(Swift_InputByteStream $is)
-    {
-        // Don't have to mirror anything
-        foreach ($this->_bound as $k => $stream) {
-            if ($stream === $is) {
-                unset($this->_bound[$k]);
-
-                return;
-            }
-        }
-
-        return;
-    }
-
-    /**
-     * Flush the contents of the stream (empty it) and set the internal pointer
-     * to the beginning.
-     *
-     * @throws Swift_IoException
-     */
-    public function flushBuffers()
-    {
-        $this->reset();
-    }
-
-    /**
-     * Set hash_algorithm, must be one of rsa-sha256 | rsa-sha1 defaults to rsa-sha256
-     *
-     * @param string $hash
-     * @return Swift_Signers_DKIMSigner
-     */
-    public function setHashAlgorithm($hash)
-    {
-        // Unable to sign with rsa-sha256
-        if ($hash == 'rsa-sha1') {
-            $this->_hashAlgorithm = 'rsa-sha1';
-        } else {
-            $this->_hashAlgorithm = 'rsa-sha256';
-        }
-
-        return $this;
-    }
-
-    /**
-     * Set the body canonicalization algorithm
-     *
-     * @param string $canon
-     * @return Swift_Signers_DKIMSigner
-     */
-    public function setBodyCanon($canon)
-    {
-        if ($canon == 'relaxed') {
-            $this->_bodyCanon = 'relaxed';
-        } else {
-            $this->_bodyCanon = 'simple';
-        }
-
-        return $this;
-    }
-
-    /**
-     * Set the header canonicalization algorithm
-     *
-     * @param string $canon
-     * @return Swift_Signers_DKIMSigner
-     */
-    public function setHeaderCanon($canon)
-    {
-        if ($canon == 'relaxed') {
-            $this->_headerCanon = 'relaxed';
-        } else {
-            $this->_headerCanon = 'simple';
-        }
-
-        return $this;
-    }
-
-    /**
-     * Set the signer identity
-     *
-     * @param string $identity
-     * @return Swift_Signers_DKIMSigner
-     */
-    public function setSignerIdentity($identity)
-    {
-        $this->_signerIdentity = $identity;
-
-        return $this;
-    }
-
-    /**
-     * Set the length of the body to sign
-     *
-     * @param mixed $len (bool or int)
-     * @return Swift_Signers_DKIMSigner
-     */
-    public function setBodySignedLen($len)
-    {
-        if ($len === true) {
-            $this->_showLen = true;
-            $this->_maxLen = PHP_INT_MAX;
-        } elseif ($len === false) {
-            $this->showLen = false;
-            $this->_maxLen = PHP_INT_MAX;
-        } else {
-            $this->_showLen = true;
-            $this->_maxLen = (int) $len;
-        }
-
-        return $this;
-    }
-
-    /**
-     * Set the signature timestamp
-     *
-     * @param timestamp $time
-     * @return Swift_Signers_DKIMSigner
-     */
-    public function setSignatureTimestamp($time)
-    {
-        $this->_signatureTimestamp = $time;
-
-        return $this;
-    }
-
-    /**
-     * Set the signature expiration timestamp
-     *
-     * @param timestamp $time
-     * @return Swift_Signers_DKIMSigner
-     */
-    public function setSignatureExpiration($time)
-    {
-        $this->_signatureExpiration = $time;
-
-        return $this;
-    }
-
-    /**
-     * Enable / disable the DebugHeaders
-     *
-     * @param bool    $debug
-     * @return Swift_Signers_DKIMSigner
-     */
-    public function setDebugHeaders($debug)
-    {
-        $this->_debugHeaders = (bool) $debug;
-
-        return $this;
-    }
-
-    /**
-     * Start Body
-     *
-     */
-    public function startBody()
-    {
-        // Init
-        switch ($this->_hashAlgorithm) {
-            case 'rsa-sha256' :
-                $this->_bodyHashHandler = hash_init('sha256');
-                break;
-            case 'rsa-sha1' :
-                $this->_bodyHashHandler = hash_init('sha1');
-                break;
-        }
-        $this->_bodyCanonLine = '';
-    }
-
-    /**
-     * End Body
-     *
-     */
-    public function endBody()
-    {
-        $this->_endOfBody();
-    }
-
-    /**
-     * Returns the list of Headers Tampered by this plugin
-     *
-     * @return array
-     */
-    public function getAlteredHeaders()
-    {
-        if ($this->_debugHeaders) {
-            return array('DKIM-Signature', 'X-DebugHash');
-        } else {
-            return array('DKIM-Signature');
-        }
-    }
-
-    /**
-     * Adds an ignored Header
-     *
-     * @param string $header_name
-     * @return Swift_Signers_DKIMSigner
-     */
-    public function ignoreHeader($header_name)
-    {
-        $this->_ignoredHeaders[strtolower($header_name)] = true;
-
-        return $this;
-    }
-
-    /**
-     * Set the headers to sign
-     *
-     * @param Swift_Mime_HeaderSet $headers
-     * @return Swift_Signers_DKIMSigner
-     */
-    public function setHeaders(Swift_Mime_HeaderSet $headers)
-    {
-        $this->_headerCanonData = '';
-        // Loop through Headers
-        $listHeaders = $headers->listAll();
-        foreach ($listHeaders as $hName) {
-            // Check if we need to ignore Header
-            if (! isset($this->_ignoredHeaders[strtolower($hName)])) {
-                if ($headers->has($hName)) {
-                    $tmp = $headers->getAll($hName);
-                    foreach ($tmp as $header) {
-                        if ($header->getFieldBody() != '') {
-                            $this->_addHeader($header->toString());
-                            $this->_signedHeaders[] = $header->getFieldName();
-                        }
-                    }
-                }
-            }
-        }
-
-        return $this;
-    }
-
-    /**
-     * Add the signature to the given Headers
-     *
-     * @param Swift_Mime_HeaderSet $headers
-     * @return Swift_Signers_DKIMSigner
-     */
-    public function addSignature(Swift_Mime_HeaderSet $headers)
-    {
-        // Prepare the DKIM-Signature
-        $params = array('v' => '1', 'a' => $this->_hashAlgorithm, 'bh' => base64_encode($this->_bodyHash), 'd' => $this->_domainName, 'h' => implode(': ', $this->_signedHeaders), 'i' => $this->_signerIdentity, 's' => $this->_selector);
-        if ($this->_bodyCanon != 'simple') {
-            $params['c'] = $this->_headerCanon . '/' . $this->_bodyCanon;
-        } elseif ($this->_headerCanon != 'simple') {
-            $params['c'] = $this->_headerCanon;
-        }
-        if ($this->_showLen) {
-            $params['l'] = $this->_bodyLen;
-        }
-        if ($this->_signatureTimestamp === true) {
-            $params['t'] = time();
-            if ($this->_signatureExpiration !== false) {
-                $params['x'] = $params['t'] + $this->_signatureExpiration;
-            }
-        } else {
-            if ($this->_signatureTimestamp !== false) {
-                $params['t'] = $this->_signatureTimestamp;
-            }
-            if ($this->_signatureExpiration !== false) {
-                $params['x'] = $this->_signatureExpiration;
-            }
-        }
-        if ($this->_debugHeaders) {
-            $params['z'] = implode('|', $this->_debugHeadersData);
-        }
-        $string = '';
-        foreach ($params as $k => $v) {
-            $string .= $k . '=' . $v . '; ';
-        }
-        $string = trim($string);
-        $headers->addTextHeader('DKIM-Signature', $string);
-        // Add the last DKIM-Signature
-        $tmp = $headers->getAll('DKIM-Signature');
-        $this->_dkimHeader = end($tmp);
-        $this->_addHeader(trim($this->_dkimHeader->toString()) . "\r\n b=", true);
-        $this->_endOfHeaders();
-        if ($this->_debugHeaders) {
-            $headers->addTextHeader('X-DebugHash', base64_encode($this->_headerHash));
-        }
-        $this->_dkimHeader->setValue($string . " b=" . trim(chunk_split(base64_encode($this->_getEncryptedHash()), 73, " ")));
-
-        return $this;
-    }
-
-    /* Private helpers */
-
-    protected function _addHeader($header, $is_sig = false)
-    {
-        switch ($this->_headerCanon) {
-            case 'relaxed' :
-                // Prepare Header and cascade
-                $exploded = explode(':', $header, 2);
-                $name = strtolower(trim($exploded[0]));
-                $value = str_replace("\r\n", "", $exploded[1]);
-                $value = preg_replace("/[ \t][ \t]+/", " ", $value);
-                $header = $name . ":" . trim($value) . ($is_sig ? '' : "\r\n");
-            case 'simple' :
-                // Nothing to do
-        }
-        $this->_addToHeaderHash($header);
-    }
-
-    protected function _endOfHeaders()
-    {
-        //$this->_headerHash=hash_final($this->_headerHashHandler, true);
-    }
-
-    protected function _canonicalizeBody($string)
-    {
-        $len = strlen($string);
-        $canon = '';
-        $method = ($this->_bodyCanon == "relaxed");
-        for ($i = 0; $i < $len; ++$i) {
-            if ($this->_bodyCanonIgnoreStart > 0) {
-                --$this->_bodyCanonIgnoreStart;
-                continue;
-            }
-            switch ($string[$i]) {
-                case "\r" :
-                    $this->_bodyCanonLastChar = "\r";
-                    break;
-                case "\n" :
-                    if ($this->_bodyCanonLastChar == "\r") {
-                        if ($method) {
-                            $this->_bodyCanonSpace = false;
-                        }
-                        if ($this->_bodyCanonLine == '') {
-                            ++$this->_bodyCanonEmptyCounter;
-                        } else {
-                            $this->_bodyCanonLine = '';
-                            $canon .= "\r\n";
-                        }
-                    } else {
-                        // Wooops Error
-                        // todo handle it but should never happen
-                    }
-                    break;
-                case " " :
-                case "\t" :
-                    if ($method) {
-                        $this->_bodyCanonSpace = true;
-                        break;
-                    }
-                default :
-                    if ($this->_bodyCanonEmptyCounter > 0) {
-                        $canon .= str_repeat("\r\n", $this->_bodyCanonEmptyCounter);
-                        $this->_bodyCanonEmptyCounter = 0;
-                    }
-                    if ($this->_bodyCanonSpace) {
-                        $this->_bodyCanonLine .= ' ';
-                        $canon .= ' ';
-                        $this->_bodyCanonSpace = false;
-                    }
-                    $this->_bodyCanonLine .= $string[$i];
-                    $canon .= $string[$i];
-            }
-        }
-        $this->_addToBodyHash($canon);
-    }
-
-    protected function _endOfBody()
-    {
-        // Add trailing Line return if last line is non empty
-        if (strlen($this->_bodyCanonLine) > 0) {
-            $this->_addToBodyHash("\r\n");
-        }
-        $this->_bodyHash = hash_final($this->_bodyHashHandler, true);
-    }
-
-    private function _addToBodyHash($string)
-    {
-        $len = strlen($string);
-        if ($len > ($new_len = ($this->_maxLen - $this->_bodyLen))) {
-            $string = substr($string, 0, $new_len);
-            $len = $new_len;
-        }
-        hash_update($this->_bodyHashHandler, $string);
-        $this->_bodyLen += $len;
-    }
-
-    private function _addToHeaderHash($header)
-    {
-        if ($this->_debugHeaders) {
-            $this->_debugHeadersData[] = trim($header);
-        }
-        $this->_headerCanonData .= $header;
-    }
-
-    /**
-     * @throws Swift_SwiftException
-     * @return string
-     */
-    private function _getEncryptedHash()
-    {
-        $signature = '';
-        switch ($this->_hashAlgorithm) {
-            case 'rsa-sha1':
-                $algorithm = OPENSSL_ALGO_SHA1;
-                break;
-            case 'rsa-sha256':
-                $algorithm = OPENSSL_ALGO_SHA256;
-                break;
-        }
-        $pkeyId=openssl_get_privatekey($this->_privateKey);
-        if (!$pkeyId) {
-            throw new Swift_SwiftException('Unable to load DKIM Private Key ['.openssl_error_string().']');
-        }
-        if (openssl_sign($this->_headerCanonData, $signature, $pkeyId, $algorithm)) {
-            return $signature;
-        }
-        throw new Swift_SwiftException('Unable to sign DKIM Hash ['.openssl_error_string().']');
-    }
-}