v2.4.0: Drop support for Zen Cart versions prior to 1.5.7a
This release contains changes associated with the following GitHub issues:
#304: Drop support for Zen Cart versions prior to zc157a.
#312: Additional AJAX messages to distinguish various timeout scenarios.
#313: Improve performance on admin's orders' listing display.
#315: Correct address handling when "Enable Shipping=Billing" is set to 'false'.
#316: Render OPC overlay when an address (either billing or shipping) is changed via dropdown of existing addresses.
#317: Enable interoperation with the square_webPay
payment method.
#318: Add a breadcrumb on the order_status
page.
#319: Use zen_cfg_read_only
for OPC's "Version" value.
#320: Correct PHP Fatal error received when an issue requiring a customer message is detected by OPC's observer.
#321: Add zone_code
to data supplied by the NOTIFY_OPC_INIT_ADDRESS_FROM_DB
notification.
#322: Correct number of parameters supplied to zen_prepare_country_zones_pull_down
.
#324: (Partial) Additional information gathered for "Invalid request, tempAddressValues not set." error log.