User Registration add-on 1.5 beta assumes "wp_" table prefix

Hi,
There is a bug in the User Registration Add-on 1.5 beta.

In the function get_user_meta_keys() around line 3397, it assumes that the WordPress table prefix is 'wp_'
The line:

$raw_keys = $wpdb->get_results("select distinct meta_key from wp_usermeta");

should be

$raw_keys = $wpdb->get_results("select distinct meta_key from {$wpdb->usermeta}");

Is there any roadmap to get this out of beta? Is there more functionality to be added?

Mike