Support unicode tokens in standardizing line endings

Author: nimah79

src/Languages/Base/Injections/GutterInjection.php

@@ -34,7 +34,7 @@ public function addClass(int $line, string $class): self
 
     public function parse(string $content, Highlighter $highlighter): ParsedInjection
     {
-        $lines = preg_split('/\R/', trim($content));
+        $lines = preg_split('/\R/u', trim($content));
 
         $gutterNumbers = [];
         $longestGutterNumber = '';

src/Languages/Ellison/Injections/ParserInjection.php

@@ -23,7 +23,7 @@ public function parseContent(string $content, Highlighter $highlighter): string
     {
         $ellison = new Ellison();
         $parsed = [];
-        $paragraphs = preg_split('/\R/', trim($content));
+        $paragraphs = preg_split('/\R/u', trim($content));
 
         foreach ($paragraphs as $paragraph) {
             $parsedParagraph = '';