Masterpress 1.3.6 is a compatibility release. It resolves an edge case with shared fieldsets not working for MySQL 8 when the fieldset is limited to more than 1 post type or taxonomy or excluding any post types or taxonomies.
WOOF_Post :: has_parent()
Checks if this post has a parent.
Note: this will only return meaningful results if this post is based on an hierarchical post type.