XT WooCommerce Floating Cart Pro 2.8.4

- **support**: Fixed issue with the "force visible on empty" option not being applied on free versions.
- **update**: XT Framework update

**support**: Removed xt-observers-polyfill script, since the plugin does not support old browsers anymore.
- **update**: XT Framework update

- **fix**: Re-wrote the calculation code for the "Free Shipping Bar" and removed the "Amount Left Display" option from the customizer. The "inc tax" or "ex tax" suffix will now depend only on the native WooCommerce option Screen Shot 2023-01-17 at 13.50.06.png
- **update**: XT Framework update