| ⇢ | A | Gateway::create_customer_for_payment() added | |
| ⇢ | A | Gateway::get_customer_id_for_subscription() added | |
| A | ↘ | B | Gateway::update_wp_user_customer_id() got worse |
| C | ↗ | A | Gateway::get_customer_id_for_payment() improved |
| A | ↛ | Gateway::get_customer_id_by_wp_user_id() removed |