Notice issue with WP_Widget constructor call in Membership 2 Pro Plugin

I am seeing the following errors when I activate the Membership 2 Pro plugin on my local development. No need for access to my local development as this is easily replicated by activating the plugin with WP_Debug mode turned on. I am running Wordpress v.4.5.

Notice: The called constructor method for WP_Widget in membershipleveltext is deprecated since version 4.3.0! Use
__construct()
instead. in /Users/dbushaw/Sites/wp/wp-includes/functions.php on line 3722

Notice: The called constructor method for WP_Widget in membershipsubtext is deprecated since version 4.3.0! Use
__construct()
instead. in /Users/dbushaw/Sites/wp/wp-includes/functions.php on line 3722