Missing shortcode_atts third parameter

I really appreciate this plugin. Sometimes though I’d like to hook into the the shortcode_atts function, however the function needs to have a third parameter specified for that to be available. See http://codex.wordpress.org/Function_Reference/shortcode_atts . This would be good also for additional sanitation before output. Anyways, if you could just add that, that would be great. Thanks!

https://wordpress.org/plugins/easy-bootstrap-shortcodes/