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diff --git a/vendor/swiftmailer/classes/Swift/Mime/Headers/AbstractHeader.php b/vendor/swiftmailer/classes/Swift/Mime/Headers/AbstractHeader.php
deleted file mode 100644
index 1050de77..00000000
--- a/vendor/swiftmailer/classes/Swift/Mime/Headers/AbstractHeader.php
+++ /dev/null
@@ -1,502 +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 abstract base MIME Header.
- *
- * @author     Chris Corbyn
- */
-abstract class Swift_Mime_Headers_AbstractHeader implements Swift_Mime_Header
-{
-    /**
-     * The name of this Header.
-     *
-     * @var string
-     */
-    private $_name;
-
-    /**
-     * The Grammar used for this Header.
-     *
-     * @var Swift_Mime_Grammar
-     */
-    private $_grammar;
-
-    /**
-     * The Encoder used to encode this Header.
-     *
-     * @var Swift_Encoder
-     */
-    private $_encoder;
-
-    /**
-     * The maximum length of a line in the header.
-     *
-     * @var int
-     */
-    private $_lineLength = 78;
-
-    /**
-     * The language used in this Header.
-     *
-     * @var string
-     */
-    private $_lang;
-
-    /**
-     * The character set of the text in this Header.
-     *
-     * @var string
-     */
-    private $_charset = 'utf-8';
-
-    /**
-     * The value of this Header, cached.
-     *
-     * @var string
-     */
-    private $_cachedValue = null;
-
-    /**
-     * Creates a new Header.
-     *
-     * @param Swift_Mime_Grammar $grammar
-     */
-    public function __construct(Swift_Mime_Grammar $grammar)
-    {
-        $this->setGrammar($grammar);
-    }
-
-    /**
-     * Set the character set used in this Header.
-     *
-     * @param string $charset
-     */
-    public function setCharset($charset)
-    {
-        $this->clearCachedValueIf($charset != $this->_charset);
-        $this->_charset = $charset;
-        if (isset($this->_encoder)) {
-            $this->_encoder->charsetChanged($charset);
-        }
-    }
-
-    /**
-     * Get the character set used in this Header.
-     *
-     * @return string
-     */
-    public function getCharset()
-    {
-        return $this->_charset;
-    }
-
-    /**
-     * Set the language used in this Header.
-     *
-     * For example, for US English, 'en-us'.
-     * This can be unspecified.
-     *
-     * @param string $lang
-     */
-    public function setLanguage($lang)
-    {
-        $this->clearCachedValueIf($this->_lang != $lang);
-        $this->_lang = $lang;
-    }
-
-    /**
-     * Get the language used in this Header.
-     *
-     * @return string
-     */
-    public function getLanguage()
-    {
-        return $this->_lang;
-    }
-
-    /**
-     * Set the encoder used for encoding the header.
-     *
-     * @param Swift_Mime_HeaderEncoder $encoder
-     */
-    public function setEncoder(Swift_Mime_HeaderEncoder $encoder)
-    {
-        $this->_encoder = $encoder;
-        $this->setCachedValue(null);
-    }
-
-    /**
-     * Get the encoder used for encoding this Header.
-     *
-     * @return Swift_Mime_HeaderEncoder
-     */
-    public function getEncoder()
-    {
-        return $this->_encoder;
-    }
-
-    /**
-     * Set the grammar used for the header.
-     *
-     * @param Swift_Mime_Grammar $grammar
-     */
-    public function setGrammar(Swift_Mime_Grammar $grammar)
-    {
-        $this->_grammar = $grammar;
-        $this->setCachedValue(null);
-    }
-
-    /**
-     * Get the grammar used for this Header.
-     *
-     * @return Swift_Mime_Grammar
-     */
-    public function getGrammar()
-    {
-        return $this->_grammar;
-    }
-
-    /**
-     * Get the name of this header (e.g. charset).
-     *
-     * @return string
-     */
-    public function getFieldName()
-    {
-        return $this->_name;
-    }
-
-    /**
-     * Set the maximum length of lines in the header (excluding EOL).
-     *
-     * @param int     $lineLength
-     */
-    public function setMaxLineLength($lineLength)
-    {
-        $this->clearCachedValueIf($this->_lineLength != $lineLength);
-        $this->_lineLength = $lineLength;
-    }
-
-    /**
-     * Get the maximum permitted length of lines in this Header.
-     *
-     * @return int
-     */
-    public function getMaxLineLength()
-    {
-        return $this->_lineLength;
-    }
-
-    /**
-     * Get this Header rendered as a RFC 2822 compliant string.
-     *
-     * @return string
-     *
-     * @throws Swift_RfcComplianceException
-     */
-    public function toString()
-    {
-        return $this->_tokensToString($this->toTokens());
-    }
-
-    /**
-     * Returns a string representation of this object.
-     *
-     * @return string
-     *
-     * @see toString()
-     */
-    public function __toString()
-    {
-        return $this->toString();
-    }
-
-    // -- Points of extension
-
-    /**
-     * Set the name of this Header field.
-     *
-     * @param string $name
-     */
-    protected function setFieldName($name)
-    {
-        $this->_name = $name;
-    }
-
-    /**
-     * Produces a compliant, formatted RFC 2822 'phrase' based on the string given.
-     *
-     * @param Swift_Mime_Header        $header
-     * @param string                   $string  as displayed
-     * @param string                   $charset of the text
-     * @param Swift_Mime_HeaderEncoder $encoder
-     * @param bool                     $shorten the first line to make remove for header name
-     *
-     * @return string
-     */
-    protected function createPhrase(Swift_Mime_Header $header, $string, $charset, Swift_Mime_HeaderEncoder $encoder = null, $shorten = false)
-    {
-        // Treat token as exactly what was given
-        $phraseStr = $string;
-        // If it's not valid
-        if (!preg_match('/^' . $this->getGrammar()->getDefinition('phrase') . '$/D', $phraseStr)) {
-            // .. but it is just ascii text, try escaping some characters
-            // and make it a quoted-string
-            if (preg_match('/^' . $this->getGrammar()->getDefinition('text') . '*$/D', $phraseStr)) {
-                $phraseStr = $this->getGrammar()->escapeSpecials(
-                    $phraseStr, array('"'), $this->getGrammar()->getSpecials()
-                    );
-                $phraseStr = '"' . $phraseStr . '"';
-            } else { // ... otherwise it needs encoding
-                // Determine space remaining on line if first line
-                if ($shorten) {
-                    $usedLength = strlen($header->getFieldName() . ': ');
-                } else {
-                    $usedLength = 0;
-                }
-                $phraseStr = $this->encodeWords($header, $string, $usedLength);
-            }
-        }
-
-        return $phraseStr;
-    }
-
-    /**
-     * Encode needed word tokens within a string of input.
-     *
-     * @param Swift_Mime_Header $header
-     * @param string            $input
-     * @param string            $usedLength optional
-     *
-     * @return string
-     */
-    protected function encodeWords(Swift_Mime_Header $header, $input, $usedLength = -1)
-    {
-        $value = '';
-
-        $tokens = $this->getEncodableWordTokens($input);
-
-        foreach ($tokens as $token) {
-            // See RFC 2822, Sect 2.2 (really 2.2 ??)
-            if ($this->tokenNeedsEncoding($token)) {
-                // Don't encode starting WSP
-                $firstChar = substr($token, 0, 1);
-                switch ($firstChar) {
-                    case ' ':
-                    case "\t":
-                        $value .= $firstChar;
-                        $token = substr($token, 1);
-                }
-
-                if (-1 == $usedLength) {
-                    $usedLength = strlen($header->getFieldName() . ': ') + strlen($value);
-                }
-                $value .= $this->getTokenAsEncodedWord($token, $usedLength);
-
-                $header->setMaxLineLength(76); // Forcefully override
-            } else {
-                $value .= $token;
-            }
-        }
-
-        return $value;
-    }
-
-    /**
-     * Test if a token needs to be encoded or not.
-     *
-     * @param string $token
-     *
-     * @return bool
-     */
-    protected function tokenNeedsEncoding($token)
-    {
-        return preg_match('~[\x00-\x08\x10-\x19\x7F-\xFF\r\n]~', $token);
-    }
-
-    /**
-     * Splits a string into tokens in blocks of words which can be encoded quickly.
-     *
-     * @param string $string
-     *
-     * @return string[]
-     */
-    protected function getEncodableWordTokens($string)
-    {
-        $tokens = array();
-
-        $encodedToken = '';
-        // Split at all whitespace boundaries
-        foreach (preg_split('~(?=[\t ])~', $string) as $token) {
-            if ($this->tokenNeedsEncoding($token)) {
-                $encodedToken .= $token;
-            } else {
-                if (strlen($encodedToken) > 0) {
-                    $tokens[] = $encodedToken;
-                    $encodedToken = '';
-                }
-                $tokens[] = $token;
-            }
-        }
-        if (strlen($encodedToken)) {
-            $tokens[] = $encodedToken;
-        }
-
-        return $tokens;
-    }
-
-    /**
-     * Get a token as an encoded word for safe insertion into headers.
-     *
-     * @param string  $token           token to encode
-     * @param int     $firstLineOffset optional
-     *
-     * @return string
-     */
-    protected function getTokenAsEncodedWord($token, $firstLineOffset = 0)
-    {
-        // Adjust $firstLineOffset to account for space needed for syntax
-        $charsetDecl = $this->_charset;
-        if (isset($this->_lang)) {
-            $charsetDecl .= '*' . $this->_lang;
-        }
-        $encodingWrapperLength = strlen(
-            '=?' . $charsetDecl . '?' . $this->_encoder->getName() . '??='
-            );
-
-        if ($firstLineOffset >= 75) { //Does this logic need to be here?
-            $firstLineOffset = 0;
-        }
-
-        $encodedTextLines = explode("\r\n",
-            $this->_encoder->encodeString(
-                $token, $firstLineOffset, 75 - $encodingWrapperLength, $this->_charset
-                )
-        );
-
-        if (strtolower($this->_charset) !== 'iso-2022-jp') { // special encoding for iso-2022-jp using mb_encode_mimeheader
-            foreach ($encodedTextLines as $lineNum => $line) {
-                $encodedTextLines[$lineNum] = '=?' . $charsetDecl .
-                    '?' . $this->_encoder->getName() .
-                    '?' . $line . '?=';
-            }
-        }
-
-        return implode("\r\n ", $encodedTextLines);
-    }
-
-    /**
-     * Generates tokens from the given string which include CRLF as individual tokens.
-     *
-     * @param string $token
-     *
-     * @return string[]
-     */
-    protected function generateTokenLines($token)
-    {
-        return preg_split('~(\r\n)~', $token, -1, PREG_SPLIT_DELIM_CAPTURE);
-    }
-
-    /**
-     * Set a value into the cache.
-     *
-     * @param string $value
-     */
-    protected function setCachedValue($value)
-    {
-        $this->_cachedValue = $value;
-    }
-
-    /**
-     * Get the value in the cache.
-     *
-     * @return string
-     */
-    protected function getCachedValue()
-    {
-        return $this->_cachedValue;
-    }
-
-    /**
-     * Clear the cached value if $condition is met.
-     *
-     * @param bool    $condition
-     */
-    protected function clearCachedValueIf($condition)
-    {
-        if ($condition) {
-            $this->setCachedValue(null);
-        }
-    }
-
-
-    /**
-     * Generate a list of all tokens in the final header.
-     *
-     * @param string $string The string to tokenize
-     *
-     * @return array An array of tokens as strings
-     */
-    protected function toTokens($string = null)
-    {
-        if (is_null($string)) {
-            $string = $this->getFieldBody();
-        }
-
-        $tokens = array();
-
-        // Generate atoms; split at all invisible boundaries followed by WSP
-        foreach (preg_split('~(?=[ \t])~', $string) as $token) {
-            $newTokens = $this->generateTokenLines($token);
-            foreach ($newTokens as $newToken) {
-                $tokens[] = $newToken;
-            }
-        }
-
-        return $tokens;
-    }
-
-    /**
-     * Takes an array of tokens which appear in the header and turns them into
-     * an RFC 2822 compliant string, adding FWSP where needed.
-     *
-     * @param string[] $tokens
-     *
-     * @return string
-     */
-    private function _tokensToString(array $tokens)
-    {
-        $lineCount = 0;
-        $headerLines = array();
-        $headerLines[] = $this->_name . ': ';
-        $currentLine =& $headerLines[$lineCount++];
-
-        // Build all tokens back into compliant header
-        foreach ($tokens as $i => $token) {
-            // Line longer than specified maximum or token was just a new line
-            if (("\r\n" == $token) ||
-                ($i > 0 && strlen($currentLine . $token) > $this->_lineLength)
-                && 0 < strlen($currentLine))
-            {
-                $headerLines[] = '';
-                $currentLine =& $headerLines[$lineCount++];
-            }
-
-            // Append token to the line
-            if ("\r\n" != $token) {
-                $currentLine .= $token;
-            }
-        }
-
-        // Implode with FWS (RFC 2822, 2.2.3)
-        return implode("\r\n", $headerLines) . "\r\n";
-    }
-}
diff --git a/vendor/swiftmailer/classes/Swift/Mime/Headers/DateHeader.php b/vendor/swiftmailer/classes/Swift/Mime/Headers/DateHeader.php
deleted file mode 100644
index a1093fb0..00000000
--- a/vendor/swiftmailer/classes/Swift/Mime/Headers/DateHeader.php
+++ /dev/null
@@ -1,125 +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.
- */
-
-/**
- * A Date MIME Header for Swift Mailer.
- *
- * @author     Chris Corbyn
- */
-class Swift_Mime_Headers_DateHeader extends Swift_Mime_Headers_AbstractHeader
-{
-    /**
-     * The UNIX timestamp value of this Header.
-     *
-     * @var int
-     */
-    private $_timestamp;
-
-    /**
-     * Creates a new DateHeader with $name and $timestamp.
-     *
-     * Example:
-     * <code>
-     * <?php
-     * $header = new Swift_Mime_Headers_DateHeader('Date', time());
-     * ?>
-     * </code>
-     *
-     * @param string             $name    of Header
-     * @param Swift_Mime_Grammar $grammar
-     */
-    public function __construct($name, Swift_Mime_Grammar $grammar)
-    {
-        $this->setFieldName($name);
-        parent::__construct($grammar);
-    }
-
-    /**
-     * Get the type of Header that this instance represents.
-     *
-     * @see TYPE_TEXT, TYPE_PARAMETERIZED, TYPE_MAILBOX
-     * @see TYPE_DATE, TYPE_ID, TYPE_PATH
-     *
-     * @return int
-     */
-    public function getFieldType()
-    {
-        return self::TYPE_DATE;
-    }
-
-    /**
-     * Set the model for the field body.
-     *
-     * This method takes a UNIX timestamp.
-     *
-     * @param int     $model
-     */
-    public function setFieldBodyModel($model)
-    {
-        $this->setTimestamp($model);
-    }
-
-    /**
-     * Get the model for the field body.
-     *
-     * This method returns a UNIX timestamp.
-     *
-     * @return mixed
-     */
-    public function getFieldBodyModel()
-    {
-        return $this->getTimestamp();
-    }
-
-    /**
-     * Get the UNIX timestamp of the Date in this Header.
-     *
-     * @return int
-     */
-    public function getTimestamp()
-    {
-        return $this->_timestamp;
-    }
-
-    /**
-     * Set the UNIX timestamp of the Date in this Header.
-     *
-     * @param int     $timestamp
-     */
-    public function setTimestamp($timestamp)
-    {
-        if (!is_null($timestamp)) {
-            $timestamp = (int) $timestamp;
-        }
-        $this->clearCachedValueIf($this->_timestamp != $timestamp);
-        $this->_timestamp = $timestamp;
-    }
-
-    /**
-     * Get the string value of the body in this Header.
-     *
-     * This is not necessarily RFC 2822 compliant since folding white space will
-     * not be added at this stage (see {@link toString()} for that).
-     *
-     * @see toString()
-     *
-     * @return string
-     */
-    public function getFieldBody()
-    {
-        if (!$this->getCachedValue()) {
-            if (isset($this->_timestamp)) {
-                $this->setCachedValue(date('r', $this->_timestamp));
-            }
-        }
-
-        return $this->getCachedValue();
-    }
-}
diff --git a/vendor/swiftmailer/classes/Swift/Mime/Headers/IdentificationHeader.php b/vendor/swiftmailer/classes/Swift/Mime/Headers/IdentificationHeader.php
deleted file mode 100644
index bf45aa94..00000000
--- a/vendor/swiftmailer/classes/Swift/Mime/Headers/IdentificationHeader.php
+++ /dev/null
@@ -1,181 +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 ID MIME Header for something like Message-ID or Content-ID.
- *
- * @author     Chris Corbyn
- */
-class Swift_Mime_Headers_IdentificationHeader extends Swift_Mime_Headers_AbstractHeader
-{
-    /**
-     * The IDs used in the value of this Header.
-     *
-     * This may hold multiple IDs or just a single ID.
-     *
-     * @var string[]
-     */
-    private $_ids = array();
-
-    /**
-     * Creates a new IdentificationHeader with the given $name and $id.
-     *
-     * @param string             $name
-     * @param Swift_Mime_Grammar $grammar
-     */
-    public function __construct($name, Swift_Mime_Grammar $grammar)
-    {
-        $this->setFieldName($name);
-        parent::__construct($grammar);
-    }
-
-    /**
-     * Get the type of Header that this instance represents.
-     *
-     * @see TYPE_TEXT, TYPE_PARAMETERIZED, TYPE_MAILBOX
-     * @see TYPE_DATE, TYPE_ID, TYPE_PATH
-     *
-     * @return int
-     */
-    public function getFieldType()
-    {
-        return self::TYPE_ID;
-    }
-
-    /**
-     * Set the model for the field body.
-     *
-     * This method takes a string ID, or an array of IDs.
-     *
-     * @param mixed $model
-     *
-     * @throws Swift_RfcComplianceException
-     */
-    public function setFieldBodyModel($model)
-    {
-        $this->setId($model);
-    }
-
-    /**
-     * Get the model for the field body.
-     *
-     * This method returns an array of IDs
-     *
-     * @return array
-     */
-    public function getFieldBodyModel()
-    {
-        return $this->getIds();
-    }
-
-    /**
-     * Set the ID used in the value of this header.
-     *
-     * @param string|array $id
-     *
-     * @throws Swift_RfcComplianceException
-     */
-    public function setId($id)
-    {
-        $this->setIds(is_array($id) ? $id : array($id));
-    }
-
-    /**
-     * Get the ID used in the value of this Header.
-     *
-     * If multiple IDs are set only the first is returned.
-     *
-     * @return string
-     */
-    public function getId()
-    {
-        if (count($this->_ids) > 0) {
-            return $this->_ids[0];
-        }
-    }
-
-    /**
-     * Set a collection of IDs to use in the value of this Header.
-     *
-     * @param string[] $ids
-     *
-     * @throws Swift_RfcComplianceException
-     */
-    public function setIds(array $ids)
-    {
-        $actualIds = array();
-
-        foreach ($ids as $id) {
-            $this->_assertValidId($id);
-            $actualIds[] = $id;
-        }
-
-        $this->clearCachedValueIf($this->_ids != $actualIds);
-        $this->_ids = $actualIds;
-    }
-
-    /**
-     * Get the list of IDs used in this Header.
-     *
-     * @return string[]
-     */
-    public function getIds()
-    {
-        return $this->_ids;
-    }
-
-    /**
-     * Get the string value of the body in this Header.
-     *
-     * This is not necessarily RFC 2822 compliant since folding white space will
-     * not be added at this stage (see {@see toString()} for that).
-     *
-     * @see toString()
-     *
-     * @return string
-     *
-     * @throws Swift_RfcComplianceException
-     */
-    public function getFieldBody()
-    {
-        if (!$this->getCachedValue()) {
-            $angleAddrs = array();
-
-            foreach ($this->_ids as $id) {
-                $angleAddrs[] = '<' . $id . '>';
-            }
-
-            $this->setCachedValue(implode(' ', $angleAddrs));
-        }
-
-        return $this->getCachedValue();
-    }
-
-    /**
-     * Throws an Exception if the id passed does not comply with RFC 2822.
-     *
-     * @param string $id
-     *
-     * @throws Swift_RfcComplianceException
-     */
-    private function _assertValidId($id)
-    {
-        if (!preg_match(
-            '/^' . $this->getGrammar()->getDefinition('id-left') . '@' .
-            $this->getGrammar()->getDefinition('id-right') . '$/D',
-            $id
-            ))
-        {
-            throw new Swift_RfcComplianceException(
-                'Invalid ID given <' . $id . '>'
-                );
-        }
-    }
-}
diff --git a/vendor/swiftmailer/classes/Swift/Mime/Headers/MailboxHeader.php b/vendor/swiftmailer/classes/Swift/Mime/Headers/MailboxHeader.php
deleted file mode 100644
index f8378d04..00000000
--- a/vendor/swiftmailer/classes/Swift/Mime/Headers/MailboxHeader.php
+++ /dev/null
@@ -1,354 +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.
- */
-
-/**
- * A Mailbox Address MIME Header for something like From or Sender.
- *
- * @author     Chris Corbyn
- */
-class Swift_Mime_Headers_MailboxHeader extends Swift_Mime_Headers_AbstractHeader
-{
-    /**
-     * The mailboxes used in this Header.
-     *
-     * @var string[]
-     */
-    private $_mailboxes = array();
-
-    /**
-     * Creates a new MailboxHeader with $name.
-     *
-     * @param string                   $name    of Header
-     * @param Swift_Mime_HeaderEncoder $encoder
-     * @param Swift_Mime_Grammar       $grammar
-     */
-    public function __construct($name, Swift_Mime_HeaderEncoder $encoder, Swift_Mime_Grammar $grammar)
-    {
-        $this->setFieldName($name);
-        $this->setEncoder($encoder);
-        parent::__construct($grammar);
-    }
-
-    /**
-     * Get the type of Header that this instance represents.
-     *
-     * @see TYPE_TEXT, TYPE_PARAMETERIZED, TYPE_MAILBOX
-     * @see TYPE_DATE, TYPE_ID, TYPE_PATH
-     *
-     * @return int
-     */
-    public function getFieldType()
-    {
-        return self::TYPE_MAILBOX;
-    }
-
-    /**
-     * Set the model for the field body.
-     *
-     * This method takes a string, or an array of addresses.
-     *
-     * @param mixed $model
-     *
-     * @throws Swift_RfcComplianceException
-     */
-    public function setFieldBodyModel($model)
-    {
-        $this->setNameAddresses($model);
-    }
-
-    /**
-     * Get the model for the field body.
-     *
-     * This method returns an associative array like {@link getNameAddresses()}
-     *
-     * @return array
-     *
-     * @throws Swift_RfcComplianceException
-     */
-    public function getFieldBodyModel()
-    {
-        return $this->getNameAddresses();
-    }
-
-    /**
-     * Set a list of mailboxes to be shown in this Header.
-     *
-     * The mailboxes can be a simple array of addresses, or an array of
-     * key=>value pairs where (email => personalName).
-     * Example:
-     * <code>
-     * <?php
-     * //Sets two mailboxes in the Header, one with a personal name
-     * $header->setNameAddresses(array(
-     *  'chris@swiftmailer.org' => 'Chris Corbyn',
-     *  'mark@swiftmailer.org' //No associated personal name
-     *  ));
-     * ?>
-     * </code>
-     *
-     * @see __construct()
-     * @see setAddresses()
-     * @see setValue()
-     *
-     * @param string|string[] $mailboxes
-     *
-     * @throws Swift_RfcComplianceException
-     */
-    public function setNameAddresses($mailboxes)
-    {
-        $this->_mailboxes = $this->normalizeMailboxes((array) $mailboxes);
-        $this->setCachedValue(null); //Clear any cached value
-    }
-
-    /**
-     * Get the full mailbox list of this Header as an array of valid RFC 2822 strings.
-     *
-     * Example:
-     * <code>
-     * <?php
-     * $header = new Swift_Mime_Headers_MailboxHeader('From',
-     *  array('chris@swiftmailer.org' => 'Chris Corbyn',
-     *  'mark@swiftmailer.org' => 'Mark Corbyn')
-     *  );
-     * print_r($header->getNameAddressStrings());
-     * // array (
-     * // 0 => Chris Corbyn <chris@swiftmailer.org>,
-     * // 1 => Mark Corbyn <mark@swiftmailer.org>
-     * // )
-     * ?>
-     * </code>
-     *
-     * @see getNameAddresses()
-     * @see toString()
-     *
-     * @return string[]
-     *
-     * @throws Swift_RfcComplianceException
-     */
-    public function getNameAddressStrings()
-    {
-        return $this->_createNameAddressStrings($this->getNameAddresses());
-    }
-
-    /**
-     * Get all mailboxes in this Header as key=>value pairs.
-     *
-     * The key is the address and the value is the name (or null if none set).
-     * Example:
-     * <code>
-     * <?php
-     * $header = new Swift_Mime_Headers_MailboxHeader('From',
-     *  array('chris@swiftmailer.org' => 'Chris Corbyn',
-     *  'mark@swiftmailer.org' => 'Mark Corbyn')
-     *  );
-     * print_r($header->getNameAddresses());
-     * // array (
-     * // chris@swiftmailer.org => Chris Corbyn,
-     * // mark@swiftmailer.org => Mark Corbyn
-     * // )
-     * ?>
-     * </code>
-     *
-     * @see getAddresses()
-     * @see getNameAddressStrings()
-     *
-     * @return string[]
-     */
-    public function getNameAddresses()
-    {
-        return $this->_mailboxes;
-    }
-
-    /**
-     * Makes this Header represent a list of plain email addresses with no names.
-     *
-     * Example:
-     * <code>
-     * <?php
-     * //Sets three email addresses as the Header data
-     * $header->setAddresses(
-     *  array('one@domain.tld', 'two@domain.tld', 'three@domain.tld')
-     *  );
-     * ?>
-     * </code>
-     *
-     * @see setNameAddresses()
-     * @see setValue()
-     *
-     * @param string[] $addresses
-     *
-     * @throws Swift_RfcComplianceException
-     */
-    public function setAddresses($addresses)
-    {
-        $this->setNameAddresses(array_values((array) $addresses));
-    }
-
-    /**
-     * Get all email addresses in this Header.
-     *
-     * @see getNameAddresses()
-     *
-     * @return string[]
-     */
-    public function getAddresses()
-    {
-        return array_keys($this->_mailboxes);
-    }
-
-    /**
-     * Remove one or more addresses from this Header.
-     *
-     * @param string|string[] $addresses
-     */
-    public function removeAddresses($addresses)
-    {
-        $this->setCachedValue(null);
-        foreach ((array) $addresses as $address) {
-            unset($this->_mailboxes[$address]);
-        }
-    }
-
-    /**
-     * Get the string value of the body in this Header.
-     *
-     * This is not necessarily RFC 2822 compliant since folding white space will
-     * not be added at this stage (see {@link toString()} for that).
-     *
-     * @see toString()
-     *
-     * @return string
-     *
-     * @throws Swift_RfcComplianceException
-     */
-    public function getFieldBody()
-    {
-        // Compute the string value of the header only if needed
-        if (is_null($this->getCachedValue())) {
-            $this->setCachedValue($this->createMailboxListString($this->_mailboxes));
-        }
-
-        return $this->getCachedValue();
-    }
-
-    // -- Points of extension
-
-    /**
-     * Normalizes a user-input list of mailboxes into consistent key=>value pairs.
-     *
-     * @param string[] $mailboxes
-     *
-     * @return string[]
-     */
-    protected function normalizeMailboxes(array $mailboxes)
-    {
-        $actualMailboxes = array();
-
-        foreach ($mailboxes as $key => $value) {
-            if (is_string($key)) { //key is email addr
-                $address = $key;
-                $name = $value;
-            } else {
-                $address = $value;
-                $name = null;
-            }
-            $this->_assertValidAddress($address);
-            $actualMailboxes[$address] = $name;
-        }
-
-        return $actualMailboxes;
-    }
-
-    /**
-     * Produces a compliant, formatted display-name based on the string given.
-     *
-     * @param string  $displayName as displayed
-     * @param bool    $shorten     the first line to make remove for header name
-     *
-     * @return string
-     */
-    protected function createDisplayNameString($displayName, $shorten = false)
-    {
-        return $this->createPhrase($this, $displayName,
-            $this->getCharset(), $this->getEncoder(), $shorten
-            );
-    }
-
-    /**
-     * Creates a string form of all the mailboxes in the passed array.
-     *
-     * @param string[] $mailboxes
-     *
-     * @return string
-     *
-     * @throws Swift_RfcComplianceException
-     */
-    protected function createMailboxListString(array $mailboxes)
-    {
-        return implode(', ', $this->_createNameAddressStrings($mailboxes));
-    }
-
-    /**
-     * Redefine the encoding requirements for mailboxes.
-     *
-     * Commas and semicolons are used to separate
-     * multiple addresses, and should therefore be encoded
-     *
-     * @param string $token
-     *
-     * @return bool
-     */
-    protected function tokenNeedsEncoding($token)
-    {
-        return preg_match('/[,;]/', $token) || parent::tokenNeedsEncoding($token);
-    }
-
-    /**
-     * Return an array of strings conforming the the name-addr spec of RFC 2822.
-     *
-     * @param string[] $mailboxes
-     *
-     * @return string[]
-     */
-    private function _createNameAddressStrings(array $mailboxes)
-    {
-        $strings = array();
-
-        foreach ($mailboxes as $email => $name) {
-            $mailboxStr = $email;
-            if (!is_null($name)) {
-                $nameStr = $this->createDisplayNameString($name, empty($strings));
-                $mailboxStr = $nameStr . ' <' . $mailboxStr . '>';
-            }
-            $strings[] = $mailboxStr;
-        }
-
-        return $strings;
-    }
-
-    /**
-     * Throws an Exception if the address passed does not comply with RFC 2822.
-     *
-     * @param string $address
-     *
-     * @throws Swift_RfcComplianceException If invalid.
-     */
-    private function _assertValidAddress($address)
-    {
-        if (!preg_match('/^' . $this->getGrammar()->getDefinition('addr-spec') . '$/D',
-            $address))
-        {
-            throw new Swift_RfcComplianceException(
-                'Address in mailbox given [' . $address .
-                '] does not comply with RFC 2822, 3.6.2.'
-                );
-        }
-    }
-}
diff --git a/vendor/swiftmailer/classes/Swift/Mime/Headers/OpenDKIMHeader.php b/vendor/swiftmailer/classes/Swift/Mime/Headers/OpenDKIMHeader.php
deleted file mode 100644
index 0b72e15d..00000000
--- a/vendor/swiftmailer/classes/Swift/Mime/Headers/OpenDKIMHeader.php
+++ /dev/null
@@ -1,137 +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 OpenDKIM Specific Header using only raw header datas without encoding
- *
- * @author     De Cock Xavier <xdecock@gmail.com>
- */
-class Swift_Mime_Headers_OpenDKIMHeader implements Swift_Mime_Header
-{
-    /**
-     * The value of this Header.
-     *
-     * @var string
-     */
-    private $_value;
-
-    /**
-     * The name of this Header
-     * @var string
-     */
-    private $_fieldName;
-
-    /**
-     * Creates a new SimpleHeader with $name.
-     *
-     * @param string                   $name
-     * @param Swift_Mime_HeaderEncoder $encoder
-     * @param Swift_Mime_Grammar       $grammar
-     */
-    public function __construct($name)
-    {
-        $this->_fieldName = $name;
-    }
-
-    /**
-     * Get the type of Header that this instance represents.
-     *
-     * @see TYPE_TEXT, TYPE_PARAMETERIZED, TYPE_MAILBOX
-     * @see TYPE_DATE, TYPE_ID, TYPE_PATH
-     *
-     * @return int
-     */
-    public function getFieldType()
-    {
-        return self::TYPE_TEXT;
-    }
-
-    /**
-     * Set the model for the field body.
-     *
-     * This method takes a string for the field value.
-     *
-     * @param string $model
-     */
-    public function setFieldBodyModel($model)
-    {
-        $this->setValue($model);
-    }
-
-    /**
-     * Get the model for the field body.
-     *
-     * This method returns a string.
-     *
-     * @return string
-     */
-    public function getFieldBodyModel()
-    {
-        return $this->getValue();
-    }
-
-    /**
-     * Get the (unencoded) value of this header.
-     *
-     * @return string
-     */
-    public function getValue()
-    {
-        return $this->_value;
-    }
-
-    /**
-     * Set the (unencoded) value of this header.
-     *
-     * @param string $value
-     */
-    public function setValue($value)
-    {
-        $this->_value = $value;
-    }
-
-    /**
-     * Get the value of this header prepared for rendering.
-     *
-     * @return string
-     */
-    public function getFieldBody()
-    {
-        return $this->_value;
-    }
-
-    /**
-     * Get this Header rendered as a RFC 2822 compliant string.
-     *
-     * @return string
-     */
-    public function toString()
-    {
-        return $this->_fieldName.': '.$this->_value;
-    }
-
-    /**
-     * Set the Header FieldName
-	 * @see Swift_Mime_Header::getFieldName()
-	 */
-    public function getFieldName()
-    {
-        return $this->_fieldName;
-    }
-
-    /**
-     * Ignored
-     */
-    public function setCharset($charset)
-    {
-
-    }
-
-}
diff --git a/vendor/swiftmailer/classes/Swift/Mime/Headers/ParameterizedHeader.php b/vendor/swiftmailer/classes/Swift/Mime/Headers/ParameterizedHeader.php
deleted file mode 100644
index 6bfdc9bc..00000000
--- a/vendor/swiftmailer/classes/Swift/Mime/Headers/ParameterizedHeader.php
+++ /dev/null
@@ -1,260 +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 abstract base MIME Header.
- *
- * @author     Chris Corbyn
- */
-class Swift_Mime_Headers_ParameterizedHeader extends Swift_Mime_Headers_UnstructuredHeader implements Swift_Mime_ParameterizedHeader
-{
-    /**
-     * RFC 2231's definition of a token.
-     *
-     * @var string
-     */
-    const TOKEN_REGEX = '(?:[\x21\x23-\x27\x2A\x2B\x2D\x2E\x30-\x39\x41-\x5A\x5E-\x7E]+)';
-
-    /**
-     * The Encoder used to encode the parameters.
-     *
-     * @var Swift_Encoder
-     */
-    private $_paramEncoder;
-
-    /**
-     * The parameters as an associative array.
-     *
-     * @var string[]
-     */
-    private $_params = array();
-
-    /**
-     * Creates a new ParameterizedHeader with $name.
-     *
-     * @param string                   $name
-     * @param Swift_Mime_HeaderEncoder $encoder
-     * @param Swift_Encoder            $paramEncoder, optional
-     * @param Swift_Mime_Grammar       $grammar
-     */
-    public function __construct($name, Swift_Mime_HeaderEncoder $encoder, Swift_Encoder $paramEncoder = null, Swift_Mime_Grammar $grammar)
-    {
-        parent::__construct($name, $encoder, $grammar);
-        $this->_paramEncoder = $paramEncoder;
-    }
-
-    /**
-     * Get the type of Header that this instance represents.
-     *
-     * @see TYPE_TEXT, TYPE_PARAMETERIZED, TYPE_MAILBOX
-     * @see TYPE_DATE, TYPE_ID, TYPE_PATH
-     *
-     * @return int
-     */
-    public function getFieldType()
-    {
-        return self::TYPE_PARAMETERIZED;
-    }
-
-    /**
-     * Set the character set used in this Header.
-     *
-     * @param string $charset
-     */
-    public function setCharset($charset)
-    {
-        parent::setCharset($charset);
-        if (isset($this->_paramEncoder)) {
-            $this->_paramEncoder->charsetChanged($charset);
-        }
-    }
-
-    /**
-     * Set the value of $parameter.
-     *
-     * @param string $parameter
-     * @param string $value
-     */
-    public function setParameter($parameter, $value)
-    {
-        $this->setParameters(array_merge($this->getParameters(), array($parameter => $value)));
-    }
-
-    /**
-     * Get the value of $parameter.
-     *
-     * @param string $parameter
-     *
-     * @return string
-     */
-    public function getParameter($parameter)
-    {
-        $params = $this->getParameters();
-
-        return array_key_exists($parameter, $params)
-            ? $params[$parameter]
-            : null;
-    }
-
-    /**
-     * Set an associative array of parameter names mapped to values.
-     *
-     * @param string[] $parameters
-     */
-    public function setParameters(array $parameters)
-    {
-        $this->clearCachedValueIf($this->_params != $parameters);
-        $this->_params = $parameters;
-    }
-
-    /**
-     * Returns an associative array of parameter names mapped to values.
-     *
-     * @return string[]
-     */
-    public function getParameters()
-    {
-        return $this->_params;
-    }
-
-    /**
-     * Get the value of this header prepared for rendering.
-     *
-     * @return string
-     */
-    public function getFieldBody() //TODO: Check caching here
-    {
-        $body = parent::getFieldBody();
-        foreach ($this->_params as $name => $value) {
-            if (!is_null($value)) {
-                // Add the parameter
-                $body .= '; ' . $this->_createParameter($name, $value);
-            }
-        }
-
-        return $body;
-    }
-
-
-    /**
-     * Generate a list of all tokens in the final header.
-     *
-     * This doesn't need to be overridden in theory, but it is for implementation
-     * reasons to prevent potential breakage of attributes.
-     *
-     * @param string $string The string to tokenize
-     *
-     * @return array An array of tokens as strings
-     */
-    protected function toTokens($string = null)
-    {
-        $tokens = parent::toTokens(parent::getFieldBody());
-
-        // Try creating any parameters
-        foreach ($this->_params as $name => $value) {
-            if (!is_null($value)) {
-                // Add the semi-colon separator
-                $tokens[count($tokens)-1] .= ';';
-                $tokens = array_merge($tokens, $this->generateTokenLines(
-                    ' ' . $this->_createParameter($name, $value)
-                    ));
-            }
-        }
-
-        return $tokens;
-    }
-
-    /**
-     * Render a RFC 2047 compliant header parameter from the $name and $value.
-     *
-     * @param string $name
-     * @param string $value
-     *
-     * @return string
-     */
-    private function _createParameter($name, $value)
-    {
-        $origValue = $value;
-
-        $encoded = false;
-        // Allow room for parameter name, indices, "=" and DQUOTEs
-        $maxValueLength = $this->getMaxLineLength() - strlen($name . '=*N"";') - 1;
-        $firstLineOffset = 0;
-
-        // If it's not already a valid parameter value...
-        if (!preg_match('/^' . self::TOKEN_REGEX . '$/D', $value)) {
-            // TODO: text, or something else??
-            // ... and it's not ascii
-            if (!preg_match('/^' . $this->getGrammar()->getDefinition('text') . '*$/D', $value)) {
-                $encoded = true;
-                // Allow space for the indices, charset and language
-                $maxValueLength = $this->getMaxLineLength() - strlen($name . '*N*="";') - 1;
-                $firstLineOffset = strlen(
-                    $this->getCharset() . "'" . $this->getLanguage() . "'"
-                    );
-            }
-        }
-
-        // Encode if we need to
-        if ($encoded || strlen($value) > $maxValueLength) {
-            if (isset($this->_paramEncoder)) {
-                $value = $this->_paramEncoder->encodeString(
-                    $origValue, $firstLineOffset, $maxValueLength, $this->getCharset()
-                    );
-            } else { // We have to go against RFC 2183/2231 in some areas for interoperability
-                $value = $this->getTokenAsEncodedWord($origValue);
-                $encoded = false;
-            }
-        }
-
-        $valueLines = isset($this->_paramEncoder) ? explode("\r\n", $value) : array($value);
-
-        // Need to add indices
-        if (count($valueLines) > 1) {
-            $paramLines = array();
-            foreach ($valueLines as $i => $line) {
-                $paramLines[] = $name . '*' . $i .
-                    $this->_getEndOfParameterValue($line, true, $i == 0);
-            }
-
-            return implode(";\r\n ", $paramLines);
-        } else {
-            return $name . $this->_getEndOfParameterValue(
-                $valueLines[0], $encoded, true
-                );
-        }
-    }
-
-    /**
-     * Returns the parameter value from the "=" and beyond.
-     *
-     * @param string  $value     to append
-     * @param bool    $encoded
-     * @param bool    $firstLine
-     *
-     * @return string
-     */
-    private function _getEndOfParameterValue($value, $encoded = false, $firstLine = false)
-    {
-        if (!preg_match('/^' . self::TOKEN_REGEX . '$/D', $value)) {
-            $value = '"' . $value . '"';
-        }
-        $prepend = '=';
-        if ($encoded) {
-            $prepend = '*=';
-            if ($firstLine) {
-                $prepend = '*=' . $this->getCharset() . "'" . $this->getLanguage() .
-                    "'";
-            }
-        }
-
-        return $prepend . $value;
-    }
-}
diff --git a/vendor/swiftmailer/classes/Swift/Mime/Headers/PathHeader.php b/vendor/swiftmailer/classes/Swift/Mime/Headers/PathHeader.php
deleted file mode 100644
index 9db2f9f4..00000000
--- a/vendor/swiftmailer/classes/Swift/Mime/Headers/PathHeader.php
+++ /dev/null
@@ -1,144 +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.
- */
-
-/**
- * A Path Header in Swift Mailer, such a Return-Path.
- *
- * @author     Chris Corbyn
- */
-class Swift_Mime_Headers_PathHeader extends Swift_Mime_Headers_AbstractHeader
-{
-    /**
-     * The address in this Header (if specified).
-     *
-     * @var string
-     */
-    private $_address;
-
-    /**
-     * Creates a new PathHeader with the given $name.
-     *
-     * @param string             $name
-     * @param Swift_Mime_Grammar $grammar
-     */
-    public function __construct($name, Swift_Mime_Grammar $grammar)
-    {
-        $this->setFieldName($name);
-        parent::__construct($grammar);
-    }
-
-    /**
-     * Get the type of Header that this instance represents.
-     *
-     * @see TYPE_TEXT, TYPE_PARAMETERIZED, TYPE_MAILBOX
-     * @see TYPE_DATE, TYPE_ID, TYPE_PATH
-     *
-     * @return int
-     */
-    public function getFieldType()
-    {
-        return self::TYPE_PATH;
-    }
-
-    /**
-     * Set the model for the field body.
-     * This method takes a string for an address.
-     *
-     * @param string $model
-     *
-     * @throws Swift_RfcComplianceException
-     */
-    public function setFieldBodyModel($model)
-    {
-        $this->setAddress($model);
-    }
-
-    /**
-     * Get the model for the field body.
-     * This method returns a string email address.
-     *
-     * @return mixed
-     */
-    public function getFieldBodyModel()
-    {
-        return $this->getAddress();
-    }
-
-    /**
-     * Set the Address which should appear in this Header.
-     *
-     * @param string $address
-     *
-     * @throws Swift_RfcComplianceException
-     */
-    public function setAddress($address)
-    {
-        if (is_null($address)) {
-            $this->_address = null;
-        } elseif ('' == $address) {
-            $this->_address = '';
-        } else {
-            $this->_assertValidAddress($address);
-            $this->_address = $address;
-        }
-        $this->setCachedValue(null);
-    }
-
-    /**
-     * Get the address which is used in this Header (if any).
-     *
-     * Null is returned if no address is set.
-     *
-     * @return string
-     */
-    public function getAddress()
-    {
-        return $this->_address;
-    }
-
-    /**
-     * Get the string value of the body in this Header.
-     *
-     * This is not necessarily RFC 2822 compliant since folding white space will
-     * not be added at this stage (see {@link toString()} for that).
-     *
-     * @see toString()
-     *
-     * @return string
-     */
-    public function getFieldBody()
-    {
-        if (!$this->getCachedValue()) {
-            if (isset($this->_address)) {
-                $this->setCachedValue('<' . $this->_address . '>');
-            }
-        }
-
-        return $this->getCachedValue();
-    }
-
-    /**
-     * Throws an Exception if the address passed does not comply with RFC 2822.
-     *
-     * @param string $address
-     *
-     * @throws Swift_RfcComplianceException If address is invalid
-     */
-    private function _assertValidAddress($address)
-    {
-        if (!preg_match('/^' . $this->getGrammar()->getDefinition('addr-spec') . '$/D',
-            $address))
-        {
-            throw new Swift_RfcComplianceException(
-                'Address set in PathHeader does not comply with addr-spec of RFC 2822.'
-                );
-        }
-    }
-}
diff --git a/vendor/swiftmailer/classes/Swift/Mime/Headers/UnstructuredHeader.php b/vendor/swiftmailer/classes/Swift/Mime/Headers/UnstructuredHeader.php
deleted file mode 100644
index 41d4e63d..00000000
--- a/vendor/swiftmailer/classes/Swift/Mime/Headers/UnstructuredHeader.php
+++ /dev/null
@@ -1,112 +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.
- */
-
-/**
- * A Simple MIME Header.
- *
- * @author     Chris Corbyn
- */
-class Swift_Mime_Headers_UnstructuredHeader extends Swift_Mime_Headers_AbstractHeader
-{
-    /**
-     * The value of this Header.
-     *
-     * @var string
-     */
-    private $_value;
-
-    /**
-     * Creates a new SimpleHeader with $name.
-     *
-     * @param string                   $name
-     * @param Swift_Mime_HeaderEncoder $encoder
-     * @param Swift_Mime_Grammar       $grammar
-     */
-    public function __construct($name, Swift_Mime_HeaderEncoder $encoder, Swift_Mime_Grammar $grammar)
-    {
-        $this->setFieldName($name);
-        $this->setEncoder($encoder);
-        parent::__construct($grammar);
-    }
-
-    /**
-     * Get the type of Header that this instance represents.
-     *
-     * @see TYPE_TEXT, TYPE_PARAMETERIZED, TYPE_MAILBOX
-     * @see TYPE_DATE, TYPE_ID, TYPE_PATH
-     *
-     * @return int
-     */
-    public function getFieldType()
-    {
-        return self::TYPE_TEXT;
-    }
-
-    /**
-     * Set the model for the field body.
-     *
-     * This method takes a string for the field value.
-     *
-     * @param string $model
-     */
-    public function setFieldBodyModel($model)
-    {
-        $this->setValue($model);
-    }
-
-    /**
-     * Get the model for the field body.
-     *
-     * This method returns a string.
-     *
-     * @return string
-     */
-    public function getFieldBodyModel()
-    {
-        return $this->getValue();
-    }
-
-    /**
-     * Get the (unencoded) value of this header.
-     *
-     * @return string
-     */
-    public function getValue()
-    {
-        return $this->_value;
-    }
-
-    /**
-     * Set the (unencoded) value of this header.
-     *
-     * @param string $value
-     */
-    public function setValue($value)
-    {
-        $this->clearCachedValueIf($this->_value != $value);
-        $this->_value = $value;
-    }
-
-    /**
-     * Get the value of this header prepared for rendering.
-     *
-     * @return string
-     */
-    public function getFieldBody()
-    {
-        if (!$this->getCachedValue()) {
-            $this->setCachedValue(
-                $this->encodeWords($this, $this->_value)
-                );
-        }
-
-        return $this->getCachedValue();
-    }
-}