Got ACL scope logic working again and began enforcing it. Breaking API change: assigning page title with $template->tpl_strings['PAGE_NAME'] will no longer work, use $template->assign_vars(). Workaround may be added later. Test for assign_vars method if compatibility needed. Added namespace processor API (non-breaking change). Several other things tweaked around as well.

<?php

class Text_Wiki_Render_Plain_Heading extends Text_Wiki_Render {
    
    function token($options)
    {
        if ($options['type'] == 'end') {
            return "\n\n";
        } else {
            return "\n";
        }
    }
}
?>