post_permalink is deprecated

Hello,

Seeing alot of this warning;
[15-Jan-2016 20:10:19 UTC] PHP Notice: post_permalink is deprecated since version 4.4! Use get_permalink() instead. in /Users/garretthyder/Gitlab/pacific-homes/website/wp-includes/functions.php on line 3573

Which is caused by the code in class-testimonials-widget.php on line 1584;
$review_meta[ self::$thing_url ] = post_permalink( $post->ID );

Switching this to get_permalink resolves the issue, please correct in upcoming release.

Thank you

https://ww.wp.xz.cn/plugins/testimonials-widget/