* Adds "Add to Cart" button on subscription product pages.
* Fixes issue with post approval status getting reset on subscription renewal.
* Deletes user packages if order is canceled.
* WPJM products can now be featured without having to feature their attached job listings/resumes.
* Fixes issue with the deletion/restoration of user listing packages when their orders are trashed/untrashed.
* Fixes issue with updating of listing counts in standard user listing packages when the listings are trashed/untrashed.
* Fixes issue where attached job listings weren't expired when the subscription expires.
* Fixes issue with sale price field not showing up on job manager product edit views in WP Admin.
* Fixes issue with subscription fields showing up in standard job or resume package product edit views in WP Admin.
* Fixes issue with WPML where some WCPL fields weren't synced across languages and package counts would include language variations.
* Minor WooCommerce 3.x deprecated hook usage update.