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diff --git a/vendor/swiftmailer/classes/Swift/Transport/Esmtp/Auth/CramMd5Authenticator.php b/vendor/swiftmailer/classes/Swift/Transport/Esmtp/Auth/CramMd5Authenticator.php
deleted file mode 100644
index 98ee0651..00000000
--- a/vendor/swiftmailer/classes/Swift/Transport/Esmtp/Auth/CramMd5Authenticator.php
+++ /dev/null
@@ -1,81 +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.
- */
-
-/**
- * Handles CRAM-MD5 authentication.
- *
- * @author     Chris Corbyn
- */
-class Swift_Transport_Esmtp_Auth_CramMd5Authenticator implements Swift_Transport_Esmtp_Authenticator
-{
-    /**
-     * Get the name of the AUTH mechanism this Authenticator handles.
-     *
-     * @return string
-     */
-    public function getAuthKeyword()
-    {
-        return 'CRAM-MD5';
-    }
-
-    /**
-     * Try to authenticate the user with $username and $password.
-     *
-     * @param Swift_Transport_SmtpAgent $agent
-     * @param string                    $username
-     * @param string                    $password
-     *
-     * @return bool
-     */
-    public function authenticate(Swift_Transport_SmtpAgent $agent, $username, $password)
-    {
-        try {
-            $challenge = $agent->executeCommand("AUTH CRAM-MD5\r\n", array(334));
-            $challenge = base64_decode(substr($challenge, 4));
-            $message = base64_encode(
-                $username . ' ' . $this->_getResponse($password, $challenge)
-                );
-            $agent->executeCommand(sprintf("%s\r\n", $message), array(235));
-
-            return true;
-        } catch (Swift_TransportException $e) {
-            $agent->executeCommand("RSET\r\n", array(250));
-
-            return false;
-        }
-    }
-
-    /**
-     * Generate a CRAM-MD5 response from a server challenge.
-     *
-     * @param string $secret
-     * @param string $challenge
-     *
-     * @return string
-     */
-    private function _getResponse($secret, $challenge)
-    {
-        if (strlen($secret) > 64) {
-            $secret = pack('H32', md5($secret));
-        }
-
-        if (strlen($secret) < 64) {
-            $secret = str_pad($secret, 64, chr(0));
-        }
-
-        $k_ipad = substr($secret, 0, 64) ^ str_repeat(chr(0x36), 64);
-        $k_opad = substr($secret, 0, 64) ^ str_repeat(chr(0x5C), 64);
-
-        $inner  = pack('H32', md5($k_ipad . $challenge));
-        $digest = md5($k_opad . $inner);
-
-        return $digest;
-    }
-}
diff --git a/vendor/swiftmailer/classes/Swift/Transport/Esmtp/Auth/LoginAuthenticator.php b/vendor/swiftmailer/classes/Swift/Transport/Esmtp/Auth/LoginAuthenticator.php
deleted file mode 100644
index ebb35520..00000000
--- a/vendor/swiftmailer/classes/Swift/Transport/Esmtp/Auth/LoginAuthenticator.php
+++ /dev/null
@@ -1,51 +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.
- */
-
-/**
- * Handles LOGIN authentication.
- *
- * @author     Chris Corbyn
- */
-class Swift_Transport_Esmtp_Auth_LoginAuthenticator implements Swift_Transport_Esmtp_Authenticator
-{
-    /**
-     * Get the name of the AUTH mechanism this Authenticator handles.
-     *
-     * @return string
-     */
-    public function getAuthKeyword()
-    {
-        return 'LOGIN';
-    }
-
-    /**
-     * Try to authenticate the user with $username and $password.
-     *
-     * @param Swift_Transport_SmtpAgent $agent
-     * @param string                    $username
-     * @param string                    $password
-     *
-     * @return bool
-     */
-    public function authenticate(Swift_Transport_SmtpAgent $agent, $username, $password)
-    {
-        try {
-            $agent->executeCommand("AUTH LOGIN\r\n", array(334));
-            $agent->executeCommand(sprintf("%s\r\n", base64_encode($username)), array(334));
-            $agent->executeCommand(sprintf("%s\r\n", base64_encode($password)), array(235));
-
-            return true;
-        } catch (Swift_TransportException $e) {
-            $agent->executeCommand("RSET\r\n", array(250));
-
-            return false;
-        }
-    }
-}
diff --git a/vendor/swiftmailer/classes/Swift/Transport/Esmtp/Auth/NTLMAuthenticator.php b/vendor/swiftmailer/classes/Swift/Transport/Esmtp/Auth/NTLMAuthenticator.php
deleted file mode 100644
index 1514cbbe..00000000
--- a/vendor/swiftmailer/classes/Swift/Transport/Esmtp/Auth/NTLMAuthenticator.php
+++ /dev/null
@@ -1,699 +0,0 @@
-<?php
-
-/*
- * This file is part of SwiftMailer.
- * (c) 2004-2009 Chris Corbyn
- *
- * This authentication is for Exchange servers. We support version 1 & 2.
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Handles NTLM authentication.
- *
- * @author     Ward Peeters <ward@coding-tech.com>
- */
-class Swift_Transport_Esmtp_Auth_NTLMAuthenticator implements Swift_Transport_Esmtp_Authenticator
-{
-    const NTLMSIG = "NTLMSSP\x00";
-    const DESCONST = "KGS!@#$%";
-
-    /**
-     * Get the name of the AUTH mechanism this Authenticator handles.
-     *
-     * @return string
-     */
-    public function getAuthKeyword()
-    {
-        return 'NTLM';
-    }
-
-    /**
-     * Try to authenticate the user with $username and $password.
-     *
-     * @param Swift_Transport_SmtpAgent $agent
-     * @param string $username
-     * @param string $password
-     *
-     * @return bool
-     */
-    public function authenticate(Swift_Transport_SmtpAgent $agent, $username, $password)
-    {
-        if (!function_exists('mcrypt_module_open')) {
-            throw new LogicException('The mcrypt functions need to be enabled to use the NTLM authenticator.');
-        }
-
-        if (!function_exists('openssl_random_pseudo_bytes')) {
-            throw new LogicException('The OpenSSL extension must be enabled to use the NTLM authenticator.');
-        }
-
-        if (!function_exists('bcmul')) {
-            throw new LogicException('The BCMatch functions must be enabled to use the NTLM authenticator.');
-        }
-
-        try {
-            // execute AUTH command and filter out the code at the beginning
-            // AUTH NTLM xxxx
-            $response = base64_decode(substr(trim($this->sendMessage1($agent)), 4));
-
-            // extra parameters for our unit cases
-            $timestamp = func_num_args() > 3 ? func_get_arg(3) : $this->getCorrectTimestamp(bcmul(microtime(true), "1000"));
-            $client = func_num_args() > 4 ? func_get_arg(4) : $this->getRandomBytes(8);
-
-            // Message 3 response
-            $this->sendMessage3($response, $username, $password, $timestamp, $client, $agent);
-
-            return true;
-        } catch (Swift_TransportException $e) {
-            $agent->executeCommand("RSET\r\n", array(250));
-
-            return false;
-        }
-    }
-
-    protected function si2bin($si, $bits = 32)
-    {
-        $bin = null;
-        if ($si >= -pow(2, $bits - 1) && ($si <= pow(2, $bits - 1))) {
-            // positive or zero
-            if ($si >= 0) {
-                $bin = base_convert($si, 10, 2);
-                // pad to $bits bit
-                $bin_length = strlen($bin);
-                if ($bin_length < $bits) {
-                    $bin = str_repeat("0", $bits - $bin_length) . $bin;
-                }
-            } else { // negative
-                $si = -$si - pow(2, $bits);
-                $bin = base_convert($si, 10, 2);
-                $bin_length = strlen($bin);
-                if ($bin_length > $bits) {
-                    $bin = str_repeat("1", $bits - $bin_length) . $bin;
-                }
-            }
-        }
-
-        return $bin;
-    }
-
-    /**
-     * Send our auth message and returns the response
-     *
-     * @param Swift_Transport_SmtpAgent $agent
-     * @return string SMTP Response
-     */
-    protected function sendMessage1(Swift_Transport_SmtpAgent $agent)
-    {
-        $message = $this->createMessage1();
-
-        return $agent->executeCommand(sprintf("AUTH %s %s\r\n", $this->getAuthKeyword(), base64_encode($message)), array(334));
-    }
-
-    /**
-     * Fetch all details of our response (message 2)
-     *
-     * @param string $response
-     * @return array our response parsed
-     */
-    protected function parseMessage2($response)
-    {
-        $responseHex = bin2hex($response);
-        $length = floor(hexdec(substr($responseHex, 28, 4)) / 256) * 2;
-        $offset = floor(hexdec(substr($responseHex, 32, 4)) / 256) * 2;
-        $challenge = $this->hex2bin(substr($responseHex, 48, 16));
-        $context = $this->hex2bin(substr($responseHex, 64, 16));
-        $targetInfoH = $this->hex2bin(substr($responseHex, 80, 16));
-        $targetName = $this->hex2bin(substr($responseHex, $offset, $length));
-        $offset = floor(hexdec(substr($responseHex, 88, 4)) / 256) * 2;
-        $targetInfoBlock = substr($responseHex, $offset);
-        list($domainName, $serverName, $DNSDomainName, $DNSServerName, $terminatorByte) = $this->readSubBlock($targetInfoBlock);
-
-        return array(
-            $challenge,
-            $context,
-            $targetInfoH,
-            $targetName,
-            $domainName,
-            $serverName,
-            $DNSDomainName,
-            $DNSServerName,
-            $this->hex2bin($targetInfoBlock),
-            $terminatorByte
-        );
-    }
-
-    /**
-     * Read the blob information in from message2
-     *
-     * @param $block
-     * @return array
-     */
-    protected function readSubBlock($block)
-    {
-        // remove terminatorByte cause it's always the same
-        $block = substr($block, 0, -8);
-
-        $length = strlen($block);
-        $offset = 0;
-        $data = array();
-        while ($offset < $length) {
-            $blockLength = hexdec(substr(substr($block, $offset, 8), -4)) / 256;
-            $offset += 8;
-            $data[] = $this->hex2bin(substr($block, $offset, $blockLength * 2));
-            $offset += $blockLength * 2;
-        }
-
-        if (count($data) == 3) {
-            $data[] = $data[2];
-            $data[2] = '';
-        }
-
-        $data[] = $this->createByte('00');
-
-        return $data;
-    }
-
-    /**
-     * Send our final message with all our data
-     *
-     * @param string $response Message 1 response (message 2)
-     * @param string $username
-     * @param string $password
-     * @param string $timestamp
-     * @param string $client
-     * @param Swift_Transport_SmtpAgent $agent
-     * @param bool $v2 Use version2 of the protocol
-     * @return string
-     */
-    protected function sendMessage3($response, $username, $password, $timestamp, $client, Swift_Transport_SmtpAgent $agent, $v2 = true)
-    {
-        list($domain, $username) = $this->getDomainAndUsername($username);
-        //$challenge, $context, $targetInfoH, $targetName, $domainName, $workstation, $DNSDomainName, $DNSServerName, $blob, $ter
-        list($challenge, , , , , $workstation, , , $blob) = $this->parseMessage2($response);
-
-        if (!$v2) {
-            // LMv1
-            $lmResponse = $this->createLMPassword($password, $challenge);
-            // NTLMv1
-            $ntlmResponse = $this->createNTLMPassword($password, $challenge);
-        } else {
-            // LMv2
-            $lmResponse = $this->createLMv2Password($password, $username, $domain, $challenge, $client);
-            // NTLMv2
-            $ntlmResponse = $this->createNTLMv2Hash($password, $username, $domain, $challenge, $blob, $timestamp, $client);
-        }
-
-        $message = $this->createMessage3($domain, $username, $workstation, $lmResponse, $ntlmResponse);
-
-        return $agent->executeCommand(sprintf("%s\r\n", base64_encode($message)), array(235));
-    }
-
-    /**
-     * Create our message 1
-     *
-     * @return string
-     */
-    protected function createMessage1()
-    {
-        return self::NTLMSIG
-        . $this->createByte('01') // Message 1
-        . $this->createByte('0702'); // Flags
-    }
-
-    /**
-     * Create our message 3
-     *
-     * @param string $domain
-     * @param string $username
-     * @param string $workstation
-     * @param string $lmResponse
-     * @param string $ntlmResponse
-     * @return string
-     */
-    protected function createMessage3($domain, $username, $workstation, $lmResponse, $ntlmResponse)
-    {
-        // Create security buffers
-        $domainSec = $this->createSecurityBuffer($domain, 64);
-        $domainInfo = $this->readSecurityBuffer(bin2hex($domainSec));
-        $userSec = $this->createSecurityBuffer($username, ($domainInfo[0] + $domainInfo[1]) / 2);
-        $userInfo = $this->readSecurityBuffer(bin2hex($userSec));
-        $workSec = $this->createSecurityBuffer($workstation, ($userInfo[0] + $userInfo[1]) / 2);
-        $workInfo = $this->readSecurityBuffer(bin2hex($workSec));
-        $lmSec = $this->createSecurityBuffer($lmResponse, ($workInfo[0] + $workInfo[1]) / 2, true);
-        $lmInfo = $this->readSecurityBuffer(bin2hex($lmSec));
-        $ntlmSec = $this->createSecurityBuffer($ntlmResponse, ($lmInfo[0] + $lmInfo[1]) / 2, true);
-
-        return self::NTLMSIG
-        . $this->createByte('03') // TYPE 3 message
-        . $lmSec // LM response header
-        . $ntlmSec // NTLM response header
-        . $domainSec // Domain header
-        . $userSec // User header
-        . $workSec // Workstation header
-        . $this->createByte("000000009a", 8) // session key header (empty)
-        . $this->createByte('01020000') // FLAGS
-        . $this->convertTo16bit($domain) // domain name
-        . $this->convertTo16bit($username) // username
-        . $this->convertTo16bit($workstation) // workstation
-        . $lmResponse
-        . $ntlmResponse;
-    }
-
-    /**
-     * @param string $timestamp Epoch timestamp in microseconds
-     * @param string $client Random bytes
-     * @param string $targetInfo
-     * @return string
-     */
-    protected function createBlob($timestamp, $client, $targetInfo)
-    {
-        return $this->createByte('0101')
-        . $this->createByte('00')
-        . $timestamp
-        . $client
-        . $this->createByte('00')
-        . $targetInfo
-        . $this->createByte('00');
-    }
-
-    /**
-     * Get domain and username from our username
-     *
-     * @example DOMAIN\username
-     *
-     * @param string $name
-     * @return array
-     */
-    protected function getDomainAndUsername($name)
-    {
-        if (strpos($name, '\\') !== false) {
-            return explode('\\', $name);
-        }
-
-        list($user, $domain) = explode('@', $name);
-
-        return array($domain, $user);
-    }
-
-    /**
-     * Create LMv1 response
-     *
-     * @param string $password
-     * @param string $challenge
-     * @return string
-     */
-    protected function createLMPassword($password, $challenge)
-    {
-        // FIRST PART
-        $password = $this->createByte(strtoupper($password), 14, false);
-        list($key1, $key2) = str_split($password, 7);
-
-        $desKey1 = $this->createDesKey($key1);
-        $desKey2 = $this->createDesKey($key2);
-
-        $constantDecrypt = $this->createByte($this->desEncrypt(self::DESCONST, $desKey1) . $this->desEncrypt(self::DESCONST, $desKey2), 21, false);
-
-        // SECOND PART
-        list($key1, $key2, $key3) = str_split($constantDecrypt, 7);
-
-        $desKey1 = $this->createDesKey($key1);
-        $desKey2 = $this->createDesKey($key2);
-        $desKey3 = $this->createDesKey($key3);
-
-        return $this->desEncrypt($challenge, $desKey1) . $this->desEncrypt($challenge, $desKey2) . $this->desEncrypt($challenge, $desKey3);
-    }
-
-    /**
-     * Create NTLMv1 response
-     *
-     * @param string $password
-     * @param string $challenge
-     * @return string
-     */
-    protected function createNTLMPassword($password, $challenge)
-    {
-        // FIRST PART
-        $ntlmHash = $this->createByte($this->md4Encrypt($password), 21, false);
-        list($key1, $key2, $key3) = str_split($ntlmHash, 7);
-
-        $desKey1 = $this->createDesKey($key1);
-        $desKey2 = $this->createDesKey($key2);
-        $desKey3 = $this->createDesKey($key3);
-
-        return $this->desEncrypt($challenge, $desKey1) . $this->desEncrypt($challenge, $desKey2) . $this->desEncrypt($challenge, $desKey3);
-    }
-
-    /**
-     * Convert a normal timestamp to a tenth of a microtime epoch time
-     *
-     * @param string $time
-     * @return string
-     */
-    protected function getCorrectTimestamp($time)
-    {
-        // Get our timestamp (tricky!)
-        bcscale(0);
-
-        $time = number_format($time, 0, '.', ''); // save microtime to string
-        $time = bcadd($time, "11644473600000"); // add epoch time
-        $time = bcmul($time, 10000); // tenths of a microsecond.
-
-        $binary = $this->si2bin($time, 64); // create 64 bit binary string
-        $timestamp = "";
-        for ($i = 0; $i < 8; $i++) {
-            $timestamp .= chr(bindec(substr($binary, -(($i + 1) * 8), 8)));
-        }
-
-        return $timestamp;
-    }
-
-    /**
-     * Create LMv2 response
-     *
-     * @param string $password
-     * @param string $username
-     * @param string $domain
-     * @param string $challenge NTLM Challenge
-     * @param string $client Random string
-     * @return string
-     */
-    protected function createLMv2Password($password, $username, $domain, $challenge, $client)
-    {
-        $lmPass = '00'; // by default 00
-        // if $password > 15 than we can't use this method
-        if (strlen($password) <= 15) {
-            $ntlmHash = $this->md4Encrypt($password);
-            $ntml2Hash = $this->md5Encrypt($ntlmHash, $this->convertTo16bit(strtoupper($username) . $domain));
-
-            $lmPass = bin2hex($this->md5Encrypt($ntml2Hash, $challenge . $client) . $client);
-        }
-
-        return $this->createByte($lmPass, 24);
-    }
-
-    /**
-     * Create NTLMv2 response
-     *
-     * @param string $password
-     * @param string $username
-     * @param string $domain
-     * @param string $challenge Hex values
-     * @param string $targetInfo Hex values
-     * @param string $timestamp
-     * @param string $client Random bytes
-     * @return string
-     * @see http://davenport.sourceforge.net/ntlm.html#theNtlmResponse
-     */
-    protected function createNTLMv2Hash($password, $username, $domain, $challenge, $targetInfo, $timestamp, $client)
-    {
-        $ntlmHash = $this->md4Encrypt($password);
-        $ntml2Hash = $this->md5Encrypt($ntlmHash, $this->convertTo16bit(strtoupper($username) . $domain));
-
-        // create blob
-        $blob = $this->createBlob($timestamp, $client, $targetInfo);
-
-        $ntlmv2Response = $this->md5Encrypt($ntml2Hash, $challenge . $blob);
-
-        return $ntlmv2Response . $blob;
-    }
-
-    protected function createDesKey($key)
-    {
-        $material = array(bin2hex($key[0]));
-        $len = strlen($key);
-        for ($i = 1; $i < $len; $i++) {
-            list($high, $low) = str_split(bin2hex($key[$i]));
-            $v = $this->castToByte(ord($key[$i - 1]) << (7 + 1 - $i) | $this->uRShift(hexdec(dechex(hexdec($high) & 0xf) . dechex(hexdec($low) & 0xf)), $i));
-            $material[] = str_pad(substr(dechex($v), -2), 2, '0', STR_PAD_LEFT); // cast to byte
-        }
-        $material[] = str_pad(substr(dechex($this->castToByte(ord($key[6]) << 1)), -2), 2, '0');
-
-        // odd parity
-        foreach ($material as $k => $v) {
-            $b = $this->castToByte(hexdec($v));
-            $needsParity = (($this->uRShift($b, 7) ^ $this->uRShift($b, 6) ^ $this->uRShift($b, 5)
-                        ^ $this->uRShift($b, 4) ^ $this->uRShift($b, 3) ^ $this->uRShift($b, 2)
-                        ^ $this->uRShift($b, 1)) & 0x01) == 0;
-
-            list($high, $low) = str_split($v);
-            if ($needsParity) {
-                $material[$k] = dechex(hexdec($high) | 0x0) . dechex(hexdec($low) | 0x1);
-            } else {
-                $material[$k] = dechex(hexdec($high) & 0xf) . dechex(hexdec($low) & 0xe);
-            }
-        }
-
-        return $this->hex2bin(implode('', $material));
-    }
-
-    /** HELPER FUNCTIONS */
-    /**
-     * Create our security buffer depending on length and offset
-     *
-     * @param string $value Value we want to put in
-     * @param int $offset start of value
-     * @param bool $is16 Do we 16bit string or not?
-     * @return string
-     */
-    protected function createSecurityBuffer($value, $offset, $is16 = false)
-    {
-        $length = strlen(bin2hex($value));
-        $length = $is16 ? $length / 2 : $length;
-        $length = $this->createByte(str_pad(dechex($length), 2, '0', STR_PAD_LEFT), 2);
-
-        return $length . $length . $this->createByte(dechex($offset), 4);
-    }
-
-    /**
-     * Read our security buffer to fetch length and offset of our value
-     *
-     * @param string $value Securitybuffer in hex
-     * @return array array with length and offset
-     */
-    protected function readSecurityBuffer($value)
-    {
-        $length = floor(hexdec(substr($value, 0, 4)) / 256) * 2;
-        $offset = floor(hexdec(substr($value, 8, 4)) / 256) * 2;
-
-        return array($length, $offset);
-    }
-
-    /**
-     * Cast to byte java equivalent to (byte)
-     *
-     * @param int $v
-     * @return int
-     */
-    protected function castToByte($v)
-    {
-        return (($v + 128) % 256) - 128;
-    }
-
-    /**
-     * Java unsigned right bitwise
-     * $a >>> $b
-     *
-     * @param int $a
-     * @param int $b
-     * @return int
-     */
-    protected function uRShift($a, $b)
-    {
-        if ($b == 0) {
-            return $a;
-        }
-
-        return ($a >> $b) & ~(1 << (8 * PHP_INT_SIZE - 1) >> ($b - 1));
-    }
-
-    /**
-     * Right padding with 0 to certain length
-     *
-     * @param string $input
-     * @param int $bytes Length of bytes
-     * @param bool $isHex Did we provided hex value
-     * @return string
-     */
-    protected function createByte($input, $bytes = 4, $isHex = true)
-    {
-        if ($isHex) {
-            $byte = $this->hex2bin(str_pad($input, $bytes * 2, '00'));
-        } else {
-            $byte = str_pad($input, $bytes, "\x00");
-        }
-
-        return $byte;
-    }
-
-    /**
-     * Create random bytes
-     *
-     * @param $length
-     * @return string
-     */
-    protected function getRandomBytes($length)
-    {
-        $bytes = openssl_random_pseudo_bytes($length, $strong);
-
-        if (false !== $bytes && true === $strong) {
-            return $bytes;
-        }
-
-        throw new RuntimeException('OpenSSL did not produce a secure random number.');
-    }
-
-    /** ENCRYPTION ALGORITHMS */
-    /**
-     * DES Encryption
-     *
-     * @param string $value
-     * @param string $key
-     * @return string
-     */
-    protected function desEncrypt($value, $key)
-    {
-        $cipher = mcrypt_module_open(MCRYPT_DES, '', 'ecb', '');
-        mcrypt_generic_init($cipher, $key, mcrypt_create_iv(mcrypt_enc_get_iv_size($cipher), MCRYPT_DEV_RANDOM));
-
-        return mcrypt_generic($cipher, $value);
-    }
-
-    /**
-     * MD5 Encryption
-     *
-     * @param string $key Encryption key
-     * @param string $msg Message to encrypt
-     * @return string
-     */
-    protected function md5Encrypt($key, $msg)
-    {
-        $blocksize = 64;
-        if (strlen($key) > $blocksize) {
-            $key = pack('H*', md5($key));
-        }
-
-        $key = str_pad($key, $blocksize, "\0");
-        $ipadk = $key ^ str_repeat("\x36", $blocksize);
-        $opadk = $key ^ str_repeat("\x5c", $blocksize);
-
-        return pack('H*', md5($opadk . pack('H*', md5($ipadk . $msg))));
-    }
-
-    /**
-     * MD4 Encryption
-     *
-     * @param string $input
-     * @return string
-     * @see http://php.net/manual/en/ref.hash.php
-     */
-    protected function md4Encrypt($input)
-    {
-        $input = $this->convertTo16bit($input);
-
-        return function_exists('hash') ? $this->hex2bin(hash('md4', $input)) : mhash(MHASH_MD4, $input);
-    }
-
-    /**
-     * Convert UTF-8 to UTF-16
-     *
-     * @param string $input
-     * @return string
-     */
-    protected function convertTo16bit($input)
-    {
-        return iconv('UTF-8', 'UTF-16LE', $input);
-    }
-
-    /**
-     * Hex2bin replacement for < PHP 5.4
-     * @param string $hex
-     * @return string Binary
-     */
-    protected function hex2bin($hex)
-    {
-        if (function_exists('hex2bin')) {
-            return hex2bin($hex);
-        } else {
-            return pack('H*', $hex);
-        }
-    }
-
-    /**
-     * @param string $message
-     */
-    protected function debug($message)
-    {
-        $message = bin2hex($message);
-        $messageId = substr($message, 16, 8);
-        echo substr($message, 0, 16) . " NTLMSSP Signature<br />\n";
-        echo $messageId . " Type Indicator<br />\n";
-
-        if ($messageId == "02000000") {
-            $map = array(
-                'Challenge',
-                'Context',
-                'Target Information Security Buffer',
-                'Target Name Data',
-                'NetBIOS Domain Name',
-                'NetBIOS Server Name',
-                'DNS Domain Name',
-                'DNS Server Name',
-                'BLOB',
-                'Target Information Terminator',
-            );
-
-            $data = $this->parseMessage2($this->hex2bin($message));
-
-            foreach ($map as $key => $value) {
-                echo bin2hex($data[$key]) . ' - ' . $data[$key] . ' ||| ' . $value . "<br />\n";
-            }
-        } elseif ($messageId == "03000000") {
-            $i = 0;
-            $data[$i++] = substr($message, 24, 16);
-            list($lmLength, $lmOffset) = $this->readSecurityBuffer($data[$i - 1]);
-
-            $data[$i++] = substr($message, 40, 16);
-            list($ntmlLength, $ntmlOffset) = $this->readSecurityBuffer($data[$i - 1]);
-
-            $data[$i++] = substr($message, 56, 16);
-            list($targetLength, $targetOffset) = $this->readSecurityBuffer($data[$i - 1]);
-
-            $data[$i++] = substr($message, 72, 16);
-            list($userLength, $userOffset) = $this->readSecurityBuffer($data[$i - 1]);
-
-            $data[$i++] = substr($message, 88, 16);
-            list($workLength, $workOffset) = $this->readSecurityBuffer($data[$i - 1]);
-
-            $data[$i++] = substr($message, 104, 16);
-            $data[$i++] = substr($message, 120, 8);
-            $data[$i++] = substr($message, $targetOffset, $targetLength);
-            $data[$i++] = substr($message, $userOffset, $userLength);
-            $data[$i++] = substr($message, $workOffset, $workLength);
-            $data[$i++] = substr($message, $lmOffset, $lmLength);
-            $data[$i] = substr($message, $ntmlOffset, $ntmlLength);
-
-            $map = array(
-                'LM Response Security Buffer',
-                'NTLM Response Security Buffer',
-                'Target Name Security Buffer',
-                'User Name Security Buffer',
-                'Workstation Name Security Buffer',
-                'Session Key Security Buffer',
-                'Flags',
-                'Target Name Data',
-                'User Name Data',
-                'Workstation Name Data',
-                'LM Response Data',
-                'NTLM Response Data',
-            );
-
-            foreach ($map as $key => $value) {
-                echo $data[$key] . ' - ' . $this->hex2bin($data[$key]) . ' ||| ' . $value . "<br />\n";
-            }
-        }
-
-        echo "<br /><br />";
-    }
-}
diff --git a/vendor/swiftmailer/classes/Swift/Transport/Esmtp/Auth/PlainAuthenticator.php b/vendor/swiftmailer/classes/Swift/Transport/Esmtp/Auth/PlainAuthenticator.php
deleted file mode 100644
index 9143ce94..00000000
--- a/vendor/swiftmailer/classes/Swift/Transport/Esmtp/Auth/PlainAuthenticator.php
+++ /dev/null
@@ -1,50 +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.
- */
-
-/**
- * Handles PLAIN authentication.
- *
- * @author     Chris Corbyn
- */
-class Swift_Transport_Esmtp_Auth_PlainAuthenticator implements Swift_Transport_Esmtp_Authenticator
-{
-    /**
-     * Get the name of the AUTH mechanism this Authenticator handles.
-     *
-     * @return string
-     */
-    public function getAuthKeyword()
-    {
-        return 'PLAIN';
-    }
-
-    /**
-     * Try to authenticate the user with $username and $password.
-     *
-     * @param Swift_Transport_SmtpAgent $agent
-     * @param string                    $username
-     * @param string                    $password
-     *
-     * @return bool
-     */
-    public function authenticate(Swift_Transport_SmtpAgent $agent, $username, $password)
-    {
-        try {
-            $message = base64_encode($username . chr(0) . $username . chr(0) . $password);
-            $agent->executeCommand(sprintf("AUTH PLAIN %s\r\n", $message), array(235));
-
-            return true;
-        } catch (Swift_TransportException $e) {
-            $agent->executeCommand("RSET\r\n", array(250));
-
-            return false;
-        }
-    }
-}
diff --git a/vendor/swiftmailer/classes/Swift/Transport/Esmtp/Auth/XOAuth2Authenticator.php b/vendor/swiftmailer/classes/Swift/Transport/Esmtp/Auth/XOAuth2Authenticator.php
deleted file mode 100644
index 38189881..00000000
--- a/vendor/swiftmailer/classes/Swift/Transport/Esmtp/Auth/XOAuth2Authenticator.php
+++ /dev/null
@@ -1,69 +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.
- */
-
-/**
- * Handles XOAUTH2 authentication.
- *
- * Example:
- * <code>
- * $transport = Swift_SmtpTransport::newInstance('smtp.gmail.com', 587, 'tls')
- *   ->setAuthMode('XOAUTH2')
- *   ->setUsername('YOUR_EMAIL_ADDRESS')
- *   ->setPassword('YOUR_ACCESS_TOKEN');
- * </code>
- *
- * @author     xu.li<AthenaLightenedMyPath@gmail.com>
- * @see        https://developers.google.com/google-apps/gmail/xoauth2_protocol
- */
-class Swift_Transport_Esmtp_Auth_XOAuth2Authenticator implements Swift_Transport_Esmtp_Authenticator
-{
-    /**
-     * Get the name of the AUTH mechanism this Authenticator handles.
-     *
-     * @return string
-     */
-    public function getAuthKeyword()
-    {
-        return 'XOAUTH2';
-    }
-
-    /**
-     * Try to authenticate the user with $email and $token.
-     *
-     * @param Swift_Transport_SmtpAgent $agent
-     * @param string                    $email
-     * @param string                    $token
-     *
-     * @return bool
-     */
-    public function authenticate(Swift_Transport_SmtpAgent $agent, $email, $token)
-    {
-        try {
-            $param = $this->constructXOAuth2Params($email, $token);
-            $agent->executeCommand("AUTH XOAUTH2 " . $param . "\r\n", array(235));
-
-            return true;
-        } catch (Swift_TransportException $e) {
-            $agent->executeCommand("RSET\r\n", array(250));
-
-            return false;
-        }
-    }
-
-    /**
-     * Construct the auth parameter
-     *
-     * @see https://developers.google.com/google-apps/gmail/xoauth2_protocol#the_sasl_xoauth2_mechanism
-     */
-    protected function constructXOAuth2Params($email, $token)
-    {
-        return base64_encode("user=$email\1auth=Bearer $token\1\1");
-    }
-}
diff --git a/vendor/swiftmailer/classes/Swift/Transport/Esmtp/AuthHandler.php b/vendor/swiftmailer/classes/Swift/Transport/Esmtp/AuthHandler.php
deleted file mode 100644
index ee2f56d2..00000000
--- a/vendor/swiftmailer/classes/Swift/Transport/Esmtp/AuthHandler.php
+++ /dev/null
@@ -1,264 +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.
- */
-
-/**
- * An ESMTP handler for AUTH support.
- *
- * @author     Chris Corbyn
- */
-class Swift_Transport_Esmtp_AuthHandler implements Swift_Transport_EsmtpHandler
-{
-    /**
-     * Authenticators available to process the request.
-     *
-     * @var Swift_Transport_Esmtp_Authenticator[]
-     */
-    private $_authenticators = array();
-
-    /**
-     * The username for authentication.
-     *
-     * @var string
-     */
-    private $_username;
-
-    /**
-     * The password for authentication.
-     *
-     * @var string
-     */
-    private $_password;
-
-    /**
-     * The auth mode for authentication.
-     *
-     * @var string
-     */
-    private $_auth_mode;
-
-    /**
-     * The ESMTP AUTH parameters available.
-     *
-     * @var string[]
-     */
-    private $_esmtpParams = array();
-
-    /**
-     * Create a new AuthHandler with $authenticators for support.
-     *
-     * @param Swift_Transport_Esmtp_Authenticator[] $authenticators
-     */
-    public function __construct(array $authenticators)
-    {
-        $this->setAuthenticators($authenticators);
-    }
-
-    /**
-     * Set the Authenticators which can process a login request.
-     *
-     * @param Swift_Transport_Esmtp_Authenticator[] $authenticators
-     */
-    public function setAuthenticators(array $authenticators)
-    {
-        $this->_authenticators = $authenticators;
-    }
-
-    /**
-     * Get the Authenticators which can process a login request.
-     *
-     * @return Swift_Transport_Esmtp_Authenticator[]
-     */
-    public function getAuthenticators()
-    {
-        return $this->_authenticators;
-    }
-
-    /**
-     * Set the username to authenticate with.
-     *
-     * @param string $username
-     */
-    public function setUsername($username)
-    {
-        $this->_username = $username;
-    }
-
-    /**
-     * Get the username to authenticate with.
-     *
-     * @return string
-     */
-    public function getUsername()
-    {
-        return $this->_username;
-    }
-
-    /**
-     * Set the password to authenticate with.
-     *
-     * @param string $password
-     */
-    public function setPassword($password)
-    {
-        $this->_password = $password;
-    }
-
-    /**
-     * Get the password to authenticate with.
-     *
-     * @return string
-     */
-    public function getPassword()
-    {
-        return $this->_password;
-    }
-
-    /**
-     * Set the auth mode to use to authenticate.
-     *
-     * @param string $mode
-     */
-    public function setAuthMode($mode)
-    {
-        $this->_auth_mode = $mode;
-    }
-
-    /**
-     * Get the auth mode to use to authenticate.
-     *
-     * @return string
-     */
-    public function getAuthMode()
-    {
-        return $this->_auth_mode;
-    }
-
-    /**
-     * Get the name of the ESMTP extension this handles.
-     *
-     * @return bool
-     */
-    public function getHandledKeyword()
-    {
-        return 'AUTH';
-    }
-
-    /**
-     * Set the parameters which the EHLO greeting indicated.
-     *
-     * @param string[] $parameters
-     */
-    public function setKeywordParams(array $parameters)
-    {
-        $this->_esmtpParams = $parameters;
-    }
-
-    /**
-     * Runs immediately after a EHLO has been issued.
-     *
-     * @param Swift_Transport_SmtpAgent $agent to read/write
-     */
-    public function afterEhlo(Swift_Transport_SmtpAgent $agent)
-    {
-        if ($this->_username) {
-            $count = 0;
-            foreach ($this->_getAuthenticatorsForAgent() as $authenticator) {
-                if (in_array(strtolower($authenticator->getAuthKeyword()),
-                    array_map('strtolower', $this->_esmtpParams)))
-                {
-                    $count++;
-                    if ($authenticator->authenticate($agent, $this->_username, $this->_password)) {
-                        return;
-                    }
-                }
-            }
-            throw new Swift_TransportException(
-                'Failed to authenticate on SMTP server with username "' .
-                $this->_username . '" using ' . $count . ' possible authenticators'
-                );
-        }
-    }
-
-    /**
-     * Not used.
-     */
-    public function getMailParams()
-    {
-        return array();
-    }
-
-    /**
-     * Not used.
-     */
-    public function getRcptParams()
-    {
-        return array();
-    }
-
-    /**
-     * Not used.
-     */
-    public function onCommand(Swift_Transport_SmtpAgent $agent, $command, $codes = array(), &$failedRecipients = null, &$stop = false)
-    {
-    }
-
-    /**
-     * Returns +1, -1 or 0 according to the rules for usort().
-     *
-     * This method is called to ensure extensions can be execute in an appropriate order.
-     *
-     * @param string $esmtpKeyword to compare with
-     *
-     * @return int
-     */
-    public function getPriorityOver($esmtpKeyword)
-    {
-        return 0;
-    }
-
-    /**
-     * Returns an array of method names which are exposed to the Esmtp class.
-     *
-     * @return string[]
-     */
-    public function exposeMixinMethods()
-    {
-        return array('setUsername', 'getUsername', 'setPassword', 'getPassword', 'setAuthMode', 'getAuthMode');
-    }
-
-    /**
-     * Not used.
-     */
-    public function resetState()
-    {
-    }
-
-    /**
-     * Returns the authenticator list for the given agent.
-     *
-     * @param Swift_Transport_SmtpAgent $agent
-     *
-     * @return array
-     */
-    protected function _getAuthenticatorsForAgent()
-    {
-        if (!$mode = strtolower($this->_auth_mode)) {
-            return $this->_authenticators;
-        }
-
-        foreach ($this->_authenticators as $authenticator) {
-            if (strtolower($authenticator->getAuthKeyword()) == $mode) {
-                return array($authenticator);
-            }
-        }
-
-        throw new Swift_TransportException('Auth mode '.$mode.' is invalid');
-    }
-}
diff --git a/vendor/swiftmailer/classes/Swift/Transport/Esmtp/Authenticator.php b/vendor/swiftmailer/classes/Swift/Transport/Esmtp/Authenticator.php
deleted file mode 100644
index 9078003a..00000000
--- a/vendor/swiftmailer/classes/Swift/Transport/Esmtp/Authenticator.php
+++ /dev/null
@@ -1,35 +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.
- */
-
-/**
- * An Authentication mechanism.
- *
- * @author     Chris Corbyn
- */
-interface Swift_Transport_Esmtp_Authenticator
-{
-    /**
-     * Get the name of the AUTH mechanism this Authenticator handles.
-     *
-     * @return string
-     */
-    public function getAuthKeyword();
-
-    /**
-     * Try to authenticate the user with $username and $password.
-     *
-     * @param Swift_Transport_SmtpAgent $agent
-     * @param string                    $username
-     * @param string                    $password
-     *
-     * @return bool
-     */
-    public function authenticate(Swift_Transport_SmtpAgent $agent, $username, $password);
-}