Gravity Forms Product Add-ons

I used this because I was saving a the Woo cart contents as a Quote for clients and when loading that saved cart in the Cart via PHP I needed to call `$pq_wc_gfa_cart = WC_GFPA_Cart::instance();` and then

`$pq_wc_gfa_cart->add_cart_item( $cart_item );`

Now that’s impossible because that function is removed.

It’s a backwards compatiblity break, so a 4.0 might also be a good version instead of keeping it in the 3.0 range.

Kind regards,

Jaime!