Now tokenizes properly when matches grab the newline

lib/Tokenizer.php

@@ -84,11 +84,16 @@ class Tokenizer {
                     'text' => substr($line, $this->offset, $lineLength - $this->offset) . ((!$this->data->lastLine) ? "\n" : '')
                 ];
             } elseif (!$this->data->lastLine) {
+                // Some matches can grab the new line, so check to see if it's already present
+                // before appending another token.
+                $lastToken = end($tokens);
+                if ($lastToken === false || substr($lastToken['text'], -1) !== "\n") {
                     $tokens[] = [
                         'scopes' => $this->scopeStack,
                         'text' => "\n"
                     ];
                 }
+            }
 
             assert($this->debugTokens($tokens));
             yield $lineNumber => $tokens;