PHPOffice/PHPWord — pull request #354 by moromete (2014-08-29 07:35:33+00:00)
Title:  added changed information to text element so we can mark it as inserted or deleted

If you want to enable track changes on added text you can mark it as INSERTED or DELETED by a specific user at a given time:

$text = $section->addText('Hello World!');
$text->setChanged(\PhpOffice\PhpWord\Element\ChangedElement::TYPE_INSERTED, 'Fred', time());