WooCommerce Gravity Forms Product Add-Ons 3.6.8

* Update: Allow for the CSS class of wc-gforms-hide-from-email to work on Product Fields in the cart.
* Update: Allow for the CSS class of wc-gforms-hide-from-email to work on Product Fields during checkout and the order process.
* Update: WC and WP Version Bump.

* Update: Include Structured Data Helper
Helpful when the base price of the product is 0, or when you want Google to be aware of the pricing options in your form.
* Update: Added translations for some more admin options which were missing them.
* Update: Hide add to cart buttons via CSS when on a multipage form and not on the last page.
* Update: Update the gform entry metadata before sending notifications so that the WC Order information can be used.
* Update: Fields marked with the Visibility: Hidden attribute will be hidden in the WC Order details.
* Update: Update Dynamic Pricing calculation so that variable product rules can be taken into account.
* Update: Allow for drop down quantity fields.
* Update: Make sure fields with a "0" value are included in the cart, orders, and confirmation emails.
* Update: Fix display issue with custom hidden fields in the Order display screen.

* Update: Include new filter woocommerce_gforms_order_item_meta to allow filtering of order item meta data just prior to it being added to the WC order item.
* Update: Perform a check before adding order item meta data to prevent duplicates. This could only be caused if the filter was being called incorrectly twice for some reason.
* Update: Include new filter woocommerce_gforms_get_cart_item_total to filter the gforms total to be added to the cart item.
* Update: Include the ability to attach a gravity form to a products bulk input form when WooCommerce Bulk Variation Forms are in use.