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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;
-    }
-}