CartFlows Pro 2.1.5

Updated free version to v1.5.10

- New: Enhanced product options with new features.
- New: Added option to refund upsell & downsell from the WooCommerce order section.
- Fix: Zero quantity was getting set from the product variation section
- Fix: Create an account checkbox issue for a two-step checkout.

Updated the free version to 1.5.7

New: Gutenberg support added for steps.
Fix: Astra’s mini cart icon display issue on the CartFlows steps.