Remove illuminate/support dependency

src/Helpers/String.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace Eightfold\HtmlSpec\Helpers;
+
+class String
+{
+    /**
+     * See Illuminate Support: https://github.com/illuminate/support/blob/master/Str.php
+     */
+    public static function slug($title, $separator = '-', $language = 'en')
+    {
+        $title = $language ? static::ascii($title, $language) : $title;
+
+        // Convert all dashes/underscores into separator
+        $flip = $separator === '-' ? '_' : '-';
+
+        $title = preg_replace('!['.preg_quote($flip).']+!u', $separator, $title);
+
+        // Replace @ with the word 'at'
+        $title = str_replace('@', $separator.'at'.$separator, $title);
+
+        // Remove all characters that are not the separator, letters, numbers, or whitespace.
+        $title = preg_replace('![^'.preg_quote($separator).'\pL\pN\s]+!u', '', static::lower($title));
+
+        // Replace all separator characters and whitespace by a single separator
+        $title = preg_replace('!['.preg_quote($separator).'\s]+!u', $separator, $title);
+
+        return trim($title, $separator);
+    }
+}

src/Read/HtmlContentCategoryIndex.php

@@ -3,7 +3,7 @@
 
 namespace Eightfold\HtmlSpec\Read;
 
-use Illuminate\Support\Str;
+use Eightfold\HtmlSpec\Helpers\String as Str;
 
 use Eightfold\HtmlSpec\Compiler;
 

src/Write/HtmlRolesIndex.php

@@ -5,7 +5,7 @@
 
 use Eightfold\HtmlSpec\Read\HtmlRolesIndex as HtmlRolesIndexReader;
 
-use Illuminate\Support\Str;
+use Eightfold\HtmlSpec\Helpers\String as Str;
 
 use Eightfold\HtmlSpec\Compiler;