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diff --git a/vendor/cssjanus/cssjanus/APACHE-LICENSE-2.0.txt b/vendor/cssjanus/cssjanus/APACHE-LICENSE-2.0.txt
new file mode 100644
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--- /dev/null
+++ b/vendor/cssjanus/cssjanus/APACHE-LICENSE-2.0.txt
@@ -0,0 +1,202 @@
+
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diff --git a/vendor/cssjanus/cssjanus/README.md b/vendor/cssjanus/cssjanus/README.md
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index 00000000..597ef211
--- /dev/null
+++ b/vendor/cssjanus/cssjanus/README.md
@@ -0,0 +1,45 @@
+[![Build Status](https://travis-ci.org/cssjanus/php-cssjanus.svg?branch=master)](https://travis-ci.org/cssjanus/php-cssjanus) [![Latest Stable Version](https://poser.pugx.org/cssjanus/cssjanus/v/stable.svg)](https://packagist.org/packages/cssjanus/cssjanus)
+
+# CSSJanus
+
+Convert CSS stylesheets between left-to-right and right-to-left.
+
+## Basic usage
+
+```php
+$rtlCss = CSSJanus::transform( $ltrCss );
+```
+
+## Advanced usage
+
+``transform( $css, $swapLtrRtlInURL = false, $swapLeftRightInURL = false )``
+
+* ``$css`` (string) Stylesheet to transform
+* ``$swapLtrRtlInURL`` (boolean) Swap 'ltr' and 'rtl' in URLs
+* ``$swapLeftRightInURL`` (boolean) Swap 'left' and 'right' in URLs
+
+### Preventing flipping
+
+Use a ```/* @noflip */``` comment to protect a rule from being changed.
+
+```css
+.rule1 {
+  /* Will be converted to margin-right */
+  margin-left: 1em;
+}
+/* @noflip */
+.rule2 {
+  /* Will be preserved as margin-left */
+  margin-left: 1em;
+}
+```
+
+## Port
+
+This is a PHP port of the Node.js implementation of CSSJanus.
+
+Feature requests and bugs related to the actual CSS transformation or test
+cases of it, should be submitted upstream at
+<https://github.com/cssjanus/cssjanus>.
+
+Upstream releases will be ported here.
diff --git a/vendor/cssjanus/cssjanus/composer.json b/vendor/cssjanus/cssjanus/composer.json
new file mode 100644
index 00000000..7ac36936
--- /dev/null
+++ b/vendor/cssjanus/cssjanus/composer.json
@@ -0,0 +1,24 @@
+{
+	"name": "cssjanus/cssjanus",
+	"description": "Convert CSS stylesheets between left-to-right and right-to-left.",
+	"repositories": [
+		{
+			"type": "vcs",
+			"url": "https://github.com/cssjanus/php-cssjanus"
+		}
+	],
+	"license": "Apache-2.0",
+	"autoload": {
+		"psr-0": {
+			"": "src/"
+		}
+	},
+	"require": {
+		"php": ">=5.3.3"
+	},
+	"require-dev": {
+		"jakub-onderka/php-parallel-lint": "0.8.*",
+		"phpunit/phpunit": "3.7.*",
+		"squizlabs/php_codesniffer": "1.*"
+	}
+}
diff --git a/vendor/cssjanus/cssjanus/src/CSSJanus.php b/vendor/cssjanus/cssjanus/src/CSSJanus.php
new file mode 100644
index 00000000..d81aa2bb
--- /dev/null
+++ b/vendor/cssjanus/cssjanus/src/CSSJanus.php
@@ -0,0 +1,454 @@
+<?php
+/**
+ * PHP port of CSSJanus.
+ * https://github.com/cssjanus/php-cssjanus
+ *
+ * Copyright 2008 Google Inc.
+ * Copyright 2010 Roan Kattouw
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * @file
+ */
+
+/**
+ * This is a PHP port of CSSJanus, a utility that transforms CSS style sheets
+ * written for LTR to RTL.
+ *
+ * Original code: http://code.google.com/p/cssjanus/source/browse/trunk/cssjanus.py
+ *
+ * @author Lindsey Simon <elsigh@google.com>
+ * @author Roan Kattouw
+ */
+class CSSJanus {
+	// Patterns defined as null are built dynamically by buildPatterns()
+	private static $patterns = array(
+		'tmpToken' => '`TMP`',
+		'nonAscii' => '[\200-\377]',
+		'unicode' => '(?:(?:\\[0-9a-f]{1,6})(?:\r\n|\s)?)',
+		'num' => '(?:[0-9]*\.[0-9]+|[0-9]+)',
+		'unit' => '(?:em|ex|px|cm|mm|in|pt|pc|deg|rad|grad|ms|s|hz|khz|%)',
+		'body_selector' => 'body\s*{\s*',
+		'direction' => 'direction\s*:\s*',
+		'escape' => null,
+		'nmstart' => null,
+		'nmchar' => null,
+		'ident' => null,
+		'quantity' => null,
+		'possibly_negative_quantity' => null,
+		'color' => null,
+		'url_special_chars' => '[!#$%&*-~]',
+		'valid_after_uri_chars' => '[\'\"]?\s*',
+		'url_chars' => null,
+		'lookahead_not_open_brace' => null,
+		'lookahead_not_closing_paren' => null,
+		'lookahead_for_closing_paren' => null,
+		'lookahead_not_letter' => '(?![a-zA-Z])',
+		'lookbehind_not_letter' => '(?<![a-zA-Z])',
+		'chars_within_selector' => '[^\}]*?',
+		'noflip_annotation' => '\/\*\!?\s*@noflip\s*\*\/',
+		'noflip_single' => null,
+		'noflip_class' => null,
+		'comment' => '/\/\*[^*]*\*+([^\/*][^*]*\*+)*\//',
+		'direction_ltr' => null,
+		'direction_rtl' => null,
+		'left' => null,
+		'right' => null,
+		'left_in_url' => null,
+		'right_in_url' => null,
+		'ltr_in_url' => null,
+		'rtl_in_url' => null,
+		'cursor_east' => null,
+		'cursor_west' => null,
+		'four_notation_quantity' => null,
+		'four_notation_color' => null,
+		'border_radius' => null,
+		'box_shadow' => null,
+		'text_shadow1' => null,
+		'text_shadow2' => null,
+		'bg_horizontal_percentage' => null,
+		'bg_horizontal_percentage_x' => null,
+	);
+
+	/**
+	 * Build patterns we can't define above because they depend on other patterns.
+	 */
+	private static function buildPatterns() {
+		if (!is_null(self::$patterns['escape'])) {
+			// Patterns have already been built
+			return;
+		}
+
+		// @codingStandardsIgnoreStart Generic.Files.LineLength.TooLong
+		$patterns =& self::$patterns;
+		$patterns['escape'] = "(?:{$patterns['unicode']}|\\[^\r\n\f0-9a-f])";
+		$patterns['nmstart'] = "(?:[_a-z]|{$patterns['nonAscii']}|{$patterns['escape']})";
+		$patterns['nmchar'] = "(?:[_a-z0-9-]|{$patterns['nonAscii']}|{$patterns['escape']})";
+		$patterns['ident'] = "-?{$patterns['nmstart']}{$patterns['nmchar']}*";
+		$patterns['quantity'] = "{$patterns['num']}(?:\s*{$patterns['unit']}|{$patterns['ident']})?";
+		$patterns['possibly_negative_quantity'] = "((?:-?{$patterns['quantity']})|(?:inherit|auto))";
+		$patterns['color'] = "(#?{$patterns['nmchar']}+|(?:rgba?|hsla?)\([ \d.,%-]+\))";
+		$patterns['url_chars'] = "(?:{$patterns['url_special_chars']}|{$patterns['nonAscii']}|{$patterns['escape']})*";
+		$patterns['lookahead_not_open_brace'] = "(?!({$patterns['nmchar']}|\r?\n|\s|#|\:|\.|\,|\+|>|\(|\)|\[|\]|=|\*=|~=|\^=|'[^']*'])*?{)";
+		$patterns['lookahead_not_closing_paren'] = "(?!{$patterns['url_chars']}?{$patterns['valid_after_uri_chars']}\))";
+		$patterns['lookahead_for_closing_paren'] = "(?={$patterns['url_chars']}?{$patterns['valid_after_uri_chars']}\))";
+		$patterns['noflip_single'] = "/({$patterns['noflip_annotation']}{$patterns['lookahead_not_open_brace']}[^;}]+;?)/i";
+		$patterns['noflip_class'] = "/({$patterns['noflip_annotation']}{$patterns['chars_within_selector']}})/i";
+		$patterns['direction_ltr'] = "/({$patterns['direction']})ltr/i";
+		$patterns['direction_rtl'] = "/({$patterns['direction']})rtl/i";
+		$patterns['left'] = "/{$patterns['lookbehind_not_letter']}(left){$patterns['lookahead_not_letter']}{$patterns['lookahead_not_closing_paren']}{$patterns['lookahead_not_open_brace']}/i";
+		$patterns['right'] = "/{$patterns['lookbehind_not_letter']}(right){$patterns['lookahead_not_letter']}{$patterns['lookahead_not_closing_paren']}{$patterns['lookahead_not_open_brace']}/i";
+		$patterns['left_in_url'] = "/{$patterns['lookbehind_not_letter']}(left){$patterns['lookahead_for_closing_paren']}/i";
+		$patterns['right_in_url'] = "/{$patterns['lookbehind_not_letter']}(right){$patterns['lookahead_for_closing_paren']}/i";
+		$patterns['ltr_in_url'] = "/{$patterns['lookbehind_not_letter']}(ltr){$patterns['lookahead_for_closing_paren']}/i";
+		$patterns['rtl_in_url'] = "/{$patterns['lookbehind_not_letter']}(rtl){$patterns['lookahead_for_closing_paren']}/i";
+		$patterns['cursor_east'] = "/{$patterns['lookbehind_not_letter']}([ns]?)e-resize/";
+		$patterns['cursor_west'] = "/{$patterns['lookbehind_not_letter']}([ns]?)w-resize/";
+		$patterns['four_notation_quantity_props'] = "((?:margin|padding|border-width)\s*:\s*)";
+		$patterns['four_notation_quantity'] = "/{$patterns['four_notation_quantity_props']}{$patterns['possibly_negative_quantity']}(\s+){$patterns['possibly_negative_quantity']}(\s+){$patterns['possibly_negative_quantity']}(\s+){$patterns['possibly_negative_quantity']}(\s*(?:!important\s*)?[;}])/i";
+		$patterns['four_notation_color'] = "/((?:-color|border-style)\s*:\s*){$patterns['color']}(\s+){$patterns['color']}(\s+){$patterns['color']}(\s+){$patterns['color']}(\s*(?:!important\s*)?[;}])/i";
+		$patterns['border_radius'] = "/(border-radius\s*:\s*)([^;}]*)/";
+		$patterns['box_shadow'] = "/(box-shadow\s*:\s*(?:inset\s*)?){$patterns['possibly_negative_quantity']}/i";
+		$patterns['text_shadow1'] = "/(text-shadow\s*:\s*){$patterns['color']}(\s*){$patterns['possibly_negative_quantity']}/i";
+		$patterns['text_shadow2'] = "/(text-shadow\s*:\s*){$patterns['possibly_negative_quantity']}/i";
+		$patterns['bg_horizontal_percentage'] = "/(background(?:-position)?\s*:\s*(?:[^:;}\s]+\s+)*?)({$patterns['quantity']})/i";
+		$patterns['bg_horizontal_percentage_x'] = "/(background-position-x\s*:\s*)(-?{$patterns['num']}%)/i";
+		// @codingStandardsIgnoreEnd
+
+	}
+
+	/**
+	 * Transform an LTR stylesheet to RTL
+	 * @param string $css stylesheet to transform
+	 * @param $swapLtrRtlInURL Boolean: If true, swap 'ltr' and 'rtl' in URLs
+	 * @param $swapLeftRightInURL Boolean: If true, swap 'left' and 'right' in URLs
+	 * @return string Transformed stylesheet
+	 */
+	public static function transform($css, $swapLtrRtlInURL = false, $swapLeftRightInURL = false) {
+		// We wrap tokens in ` , not ~ like the original implementation does.
+		// This was done because ` is not a legal character in CSS and can only
+		// occur in URLs, where we escape it to %60 before inserting our tokens.
+		$css = str_replace('`', '%60', $css);
+
+		self::buildPatterns();
+
+		// Tokenize single line rules with /* @noflip */
+		$noFlipSingle = new CSSJanusTokenizer(self::$patterns['noflip_single'], '`NOFLIP_SINGLE`');
+		$css = $noFlipSingle->tokenize($css);
+
+		// Tokenize class rules with /* @noflip */
+		$noFlipClass = new CSSJanusTokenizer(self::$patterns['noflip_class'], '`NOFLIP_CLASS`');
+		$css = $noFlipClass->tokenize($css);
+
+		// Tokenize comments
+		$comments = new CSSJanusTokenizer(self::$patterns['comment'], '`C`');
+		$css = $comments->tokenize($css);
+
+		// LTR->RTL fixes start here
+		$css = self::fixDirection($css);
+		if ($swapLtrRtlInURL) {
+			$css = self::fixLtrRtlInURL($css);
+		}
+
+		if ($swapLeftRightInURL) {
+			$css = self::fixLeftRightInURL($css);
+		}
+		$css = self::fixLeftAndRight($css);
+		$css = self::fixCursorProperties($css);
+		$css = self::fixFourPartNotation($css);
+		$css = self::fixBorderRadius($css);
+		$css = self::fixBackgroundPosition($css);
+		$css = self::fixShadows($css);
+
+		// Detokenize stuff we tokenized before
+		$css = $comments->detokenize($css);
+		$css = $noFlipClass->detokenize($css);
+		$css = $noFlipSingle->detokenize($css);
+
+		return $css;
+	}
+
+	/**
+	 * Replace direction: ltr; with direction: rtl; and vice versa.
+	 *
+	 * The original implementation only does this inside body selectors
+	 * and misses "body\n{\ndirection:ltr;\n}". This function does not have
+	 * these problems.
+	 *
+	 * See https://code.google.com/p/cssjanus/issues/detail?id=15
+	 *
+	 * @param $css string
+	 * @return string
+	 */
+	private static function fixDirection($css) {
+		$css = preg_replace(
+			self::$patterns['direction_ltr'],
+			'$1' . self::$patterns['tmpToken'],
+			$css
+		);
+		$css = preg_replace(self::$patterns['direction_rtl'], '$1ltr', $css);
+		$css = str_replace(self::$patterns['tmpToken'], 'rtl', $css);
+
+		return $css;
+	}
+
+	/**
+	 * Replace 'ltr' with 'rtl' and vice versa in background URLs
+	 * @param $css string
+	 * @return string
+	 */
+	private static function fixLtrRtlInURL($css) {
+		$css = preg_replace(self::$patterns['ltr_in_url'], self::$patterns['tmpToken'], $css);
+		$css = preg_replace(self::$patterns['rtl_in_url'], 'ltr', $css);
+		$css = str_replace(self::$patterns['tmpToken'], 'rtl', $css);
+
+		return $css;
+	}
+
+	/**
+	 * Replace 'left' with 'right' and vice versa in background URLs
+	 * @param $css string
+	 * @return string
+	 */
+	private static function fixLeftRightInURL($css) {
+		$css = preg_replace(self::$patterns['left_in_url'], self::$patterns['tmpToken'], $css);
+		$css = preg_replace(self::$patterns['right_in_url'], 'left', $css);
+		$css = str_replace(self::$patterns['tmpToken'], 'right', $css);
+
+		return $css;
+	}
+
+	/**
+	 * Flip rules like left: , padding-right: , etc.
+	 * @param $css string
+	 * @return string
+	 */
+	private static function fixLeftAndRight($css) {
+		$css = preg_replace(self::$patterns['left'], self::$patterns['tmpToken'], $css);
+		$css = preg_replace(self::$patterns['right'], 'left', $css);
+		$css = str_replace(self::$patterns['tmpToken'], 'right', $css);
+
+		return $css;
+	}
+
+	/**
+	 * Flip East and West in rules like cursor: nw-resize;
+	 * @param $css string
+	 * @return string
+	 */
+	private static function fixCursorProperties($css) {
+		$css = preg_replace(
+			self::$patterns['cursor_east'],
+			'$1' . self::$patterns['tmpToken'],
+			$css
+		);
+		$css = preg_replace(self::$patterns['cursor_west'], '$1e-resize', $css);
+		$css = str_replace(self::$patterns['tmpToken'], 'w-resize', $css);
+
+		return $css;
+	}
+
+	/**
+	 * Swap the second and fourth parts in four-part notation rules like
+	 * padding: 1px 2px 3px 4px;
+	 *
+	 * Unlike the original implementation, this function doesn't suffer from
+	 * the bug where whitespace is not preserved when flipping four-part rules
+	 * and four-part color rules with multiple whitespace characters between
+	 * colors are not recognized.
+	 * See https://code.google.com/p/cssjanus/issues/detail?id=16
+	 * @param $css string
+	 * @return string
+	 */
+	private static function fixFourPartNotation($css) {
+		$css = preg_replace(self::$patterns['four_notation_quantity'], '$1$2$3$8$5$6$7$4$9', $css);
+		$css = preg_replace(self::$patterns['four_notation_color'], '$1$2$3$8$5$6$7$4$9', $css);
+		return $css;
+	}
+
+	/**
+	 * Swaps appropriate corners in border-radius values.
+	 *
+	 * @param $css string
+	 * @return string
+	 */
+	private static function fixBorderRadius($css) {
+		$css = preg_replace_callback(self::$patterns['border_radius'], function ($matches) {
+			$pre = $matches[1];
+			$values = $matches[2];
+			$numValues = count(preg_split('/\s+/', trim($values)));
+			switch ($numValues) {
+				case 4:
+					$values = preg_replace('/^(\S+)(\s*)(\S+)(\s*)(\S+)(\s*)(\S+)/', '$3$2$1$4$7$6$5', $values);
+					break;
+				case 3:
+				case 2:
+					$values = preg_replace('/^(\S+)(\s*)(\S+)/', '$3$2$1', $values);
+					break;
+			}
+			return $pre . $values;
+		}, $css);
+
+		return $css;
+	}
+
+	/**
+	 * Negates horizontal offset in box-shadow and text-shadow rules.
+	 *
+	 * @param $css string
+	 * @return string
+	 */
+	private static function fixShadows($css) {
+		// Flips the sign of a CSS value, possibly with a unit.
+		// (We can't just negate the value with unary minus due to the units.)
+		$flipSign = function ($cssValue) {
+			// Don't mangle zeroes
+			if (floatval($cssValue) === 0.0) {
+				return $cssValue;
+			} elseif ($cssValue[0] === '-') {
+				return substr($cssValue, 1);
+			} else {
+				return "-" . $cssValue;
+			}
+		};
+
+		$css = preg_replace_callback(self::$patterns['box_shadow'], function ($matches) use ($flipSign) {
+			return $matches[1] . $flipSign($matches[2]);
+		}, $css);
+
+		$css = preg_replace_callback(self::$patterns['text_shadow1'], function ($matches) use ($flipSign) {
+			return $matches[1] . $matches[2] . $matches[3] . $flipSign($matches[4]);
+		}, $css);
+
+		$css = preg_replace_callback(self::$patterns['text_shadow2'], function ($matches) use ($flipSign) {
+			return $matches[1] . $flipSign($matches[2]);
+		}, $css);
+
+		return $css;
+	}
+
+	/**
+	 * Flip horizontal background percentages.
+	 * @param $css string
+	 * @return string
+	 */
+	private static function fixBackgroundPosition($css) {
+		$replaced = preg_replace_callback(
+			self::$patterns['bg_horizontal_percentage'],
+			array('self', 'calculateNewBackgroundPosition'),
+			$css
+		);
+		if ($replaced !== null) {
+			// preg_replace_callback() sometimes returns null
+			$css = $replaced;
+		}
+		$replaced = preg_replace_callback(
+			self::$patterns['bg_horizontal_percentage_x'],
+			array('self', 'calculateNewBackgroundPosition'),
+			$css
+		);
+		if ($replaced !== null) {
+			$css = $replaced;
+		}
+
+		return $css;
+	}
+
+	/**
+	 * Callback for fixBackgroundPosition()
+	 * @param $matches array
+	 * @return string
+	 */
+	private static function calculateNewBackgroundPosition($matches) {
+		$value = $matches[2];
+		if (substr($value, -1) === '%') {
+			$idx = strpos($value, '.');
+			if ($idx !== false) {
+				$len = strlen($value) - $idx - 2;
+				$value = number_format(100 - $value, $len) . '%';
+			} else {
+				$value = (100 - $value) . '%';
+			}
+		}
+		return $matches[1] . $value;
+	}
+}
+
+/**
+ * Utility class used by CSSJanus that tokenizes and untokenizes things we want
+ * to protect from being janused.
+ * @author Roan Kattouw
+ */
+class CSSJanusTokenizer {
+	private $regex;
+	private $token;
+	private $originals;
+
+	/**
+	 * Constructor
+	 * @param string $regex Regular expression whose matches to replace by a token.
+	 * @param string $token Token
+	 */
+	public function __construct($regex, $token) {
+		$this->regex = $regex;
+		$this->token = $token;
+		$this->originals = array();
+	}
+
+	/**
+	 * Replace all occurrences of $regex in $str with a token and remember
+	 * the original strings.
+	 * @param string $str to tokenize
+	 * @return string Tokenized string
+	 */
+	public function tokenize($str) {
+		return preg_replace_callback($this->regex, array($this, 'tokenizeCallback'), $str);
+	}
+
+	/**
+	 * @param $matches array
+	 * @return string
+	 */
+	private function tokenizeCallback($matches) {
+		$this->originals[] = $matches[0];
+		return $this->token;
+	}
+
+	/**
+	 * Replace tokens with their originals. If multiple strings were tokenized, it's important they be
+	 * detokenized in exactly the SAME ORDER.
+	 * @param string $str previously run through tokenize()
+	 * @return string Original string
+	 */
+	public function detokenize($str) {
+		// PHP has no function to replace only the first occurrence or to
+		// replace occurrences of the same string with different values,
+		// so we use preg_replace_callback() even though we don't really need a regex
+		return preg_replace_callback(
+			'/' . preg_quote($this->token, '/') . '/',
+			array($this, 'detokenizeCallback'),
+			$str
+		);
+	}
+
+	/**
+	 * @param $matches
+	 * @return mixed
+	 */
+	private function detokenizeCallback($matches) {
+		$retval = current($this->originals);
+		next($this->originals);
+
+		return $retval;
+	}
+}
diff --git a/vendor/cssjanus/cssjanus/test/codesniffer/ruleset.xml b/vendor/cssjanus/cssjanus/test/codesniffer/ruleset.xml
new file mode 100644
index 00000000..dab0fe2a
--- /dev/null
+++ b/vendor/cssjanus/cssjanus/test/codesniffer/ruleset.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0"?>
+<ruleset name="cssjanus">
+	<rule ref="PSR2">
+		<exclude name="PSR1.Classes.ClassDeclaration.MissingNamespace" />
+		<exclude name="PSR1.Classes.ClassDeclaration.MultipleClasses" />
+		<exclude name="PSR2.Classes.ClassDeclaration.OpenBraceNewLine" />
+		<exclude name="Squiz.Functions.MultiLineFunctionDeclaration.BraceOnSameLine" />
+	</rule>
+</ruleset>
diff --git a/vendor/cssjanus/cssjanus/test/phpunit.xml b/vendor/cssjanus/cssjanus/test/phpunit.xml
new file mode 100644
index 00000000..6d37a1c4
--- /dev/null
+++ b/vendor/cssjanus/cssjanus/test/phpunit.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit colors="true" strict="true" bootstrap="../vendor/autoload.php">
+	<testsuites>
+		<testsuite name="CSSJanus Test Suite">
+			<directory>./suites</directory>
+		</testsuite>
+	</testsuites>
+</phpunit>
diff --git a/vendor/cssjanus/cssjanus/test/run b/vendor/cssjanus/cssjanus/test/run
new file mode 100644
index 00000000..247500c7
--- /dev/null
+++ b/vendor/cssjanus/cssjanus/test/run
@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+set -e
+cd $(cd $(dirname $0)/..; pwd)
+set -x
+./vendor/bin/parallel-lint --exclude vendor .
+./vendor/bin/phpunit --configuration test/phpunit.xml
+./vendor/bin/phpcs . --standard=./test/codesniffer --ignore=vendor/* --report=full -s --tab-width=4
diff --git a/vendor/cssjanus/cssjanus/test/suites/CSSJanusTest.php b/vendor/cssjanus/cssjanus/test/suites/CSSJanusTest.php
new file mode 100644
index 00000000..8a436760
--- /dev/null
+++ b/vendor/cssjanus/cssjanus/test/suites/CSSJanusTest.php
@@ -0,0 +1,71 @@
+<?php
+
+class CSSJanusTest extends PHPUnit_Framework_TestCase {
+
+	public static function provideData() {
+		$data = self::getSpec();
+		$cases = array();
+		$defaultSettings = array(
+			'swapLtrRtlInUrl' => false,
+			'swapLeftRightInUrl' => false,
+		);
+		foreach ($data as $name => $test) {
+			$settings = isset($test['settings']) ? $test['settings'] : array();
+			$settings += $defaultSettings;
+			foreach ($test['cases'] as $i => $case) {
+				$input = $case[0];
+				$noop = !isset($case[1]);
+				$output = $noop ? $input : $case[1];
+
+				$cases[] = array(
+					$input,
+					$settings,
+					$output,
+					$name,
+				);
+
+				if (!$noop) {
+					// Round trip
+					$cases[] = array(
+						$output,
+						$settings,
+						$input,
+						$name,
+					);
+				}
+			}
+		}
+		return $cases;
+	}
+
+	/**
+	 * @dataProvider provideData
+	 */
+	public function testTransform($input, $settings, $output, $name) {
+		$this->assertEquals(
+			$output,
+			CSSJanus::transform($input, $settings['swapLtrRtlInUrl'], $settings['swapLeftRightInUrl']),
+			$name
+		);
+	}
+
+	protected static function getSpec() {
+		static $json;
+		if ($json == null) {
+			$version = '1.1.1';
+			$dir = dirname(__DIR__);
+			$file = "$dir/data-v$version.json";
+			if (!is_readable($file)) {
+				array_map('unlink', glob("$dir/data-v*.json"));
+				$json = file_get_contents("https://github.com/cssjanus/cssjanus/raw/v$version/test/data.json");
+				if ($json === false) {
+					throw new Exception('Failed to fetch data');
+				}
+				file_put_contents($file, $json);
+			} else {
+				$json = file_get_contents($file);
+			}
+		}
+		return json_decode($json, /* $assoc = */ true);
+	}
+}