| B | ↘ | C | WPInv_Meta_Box_Details got worse |
| ⇢ | D | wpinv-invoice-functions.php ➔ wpinv_checkout_valid... added | |
| ⇢ | A | wpinv-invoice-functions.php ➔ wpinv_checkout_valid... added | |
| ⇢ | A | WPInv_Invoice::is_refunded() added | |
| ⇢ | A | wpinv-general-functions.php ➔ wpinv_allow_guest_ch... added | |
| A | ↘ | B | wpinv-invoice-functions.php ➔ wpinv_validate_check... got worse |
| D | ↗ | C | wpinv-invoice-functions.php ➔ wpinv_can_view_recei... improved |
| B | ↗ | A | wpinv-template-functions.php ➔ wpinv_invoice_displ... improved |
| B | ↗ | A | wpinv-template-functions.php ➔ wpinv_invoice_displ... improved |
| C | ↘ | D | wpinv-invoice-functions.php ➔ wpinv_checkout_form_... got worse |
| A | ↘ | B | WPInv_EUVat::get_user_company() got worse |
| B | ↘ | C | wpinv-template-functions.php ➔ wpinv_display_payme... got worse |
| C | ↘ | D | wpinv-general-functions.php ➔ wpinv_user_can_print... got worse |
| B | ↘ | C | wpinv-template-functions.php ➔ wpinv_receipt_actio... got worse |
| D | ↛ | wpinv-invoice-functions.php ➔ wpinv_checkout_valid... removed |