WooCommerce Gravity Forms Product Add-Ons 3.6.6

* Fix: Fix issue where fields hidden by conditional logic were showing up in the order details on a completed order.
* Fix: Fix issue where entries where not created when the order was placed for Variable Products. #39
* Update: Allow the recaptcha field to function.
There is a limitation though that on successful addition to the cart the product page needs to be refreshed in order for the re-captcha to show up again.
* Fix: Fix issue where Before and After text was duplicated for Variable Products.
* Fix: Fix issue with missing argument in add_to_cart text filter.

* Update: Remove deprecated call to adjust_price();
* Update: Prevent the View Gravity Form entry data from appearing in re-sent processing emails.
* Update: Prevent the gravity form entry meta key from being saved as order item meta when an order is updated.

* Fix: Fix function reference error to wc_add_notice from the admin.
* Fix: Fix product prices not being hidden in WC 3.0 when selecting the option in the Gravity Forms configuration.