- Changed variable name from `$stmt_service` to `$stmt_refreshkey` for clarity in `authorization.php` and `token_refresh.php`.
- Added null coalescing operator to ensure criteria are set to an empty string if not provided in `products_software_versions.php`.
- Modified SQL script to add `eu` column to `taxes` table and update tax rates based on EU membership.
- Enhanced invoice generation logic in `functions.php` to include VAT notes based on customer country and VAT number.
- Updated email and PDF templates to display VAT notes and percentages correctly.
- Adjusted JavaScript tax calculation logic to handle VAT based on country and VAT number.
- Fixed API URL in `index.php` for token refresh endpoint.
- Updated countries data structure in `countries.php` to include EU membership status.
- Added a helper function to generate country select options in software tool.
- Updated user info modal and payment modal to use country dropdowns instead of text inputs.
- Implemented tax calculation based on selected country in payment modal.
- Improved software options loading behavior in debug mode.
- Enhanced description formatting in payment modal.
- Added log modal for equipment updates with a link to view logs.
- Introduced a new countries settings file with tax rates for various countries.
- Minor adjustments to various PHP files for better handling of equipment and payment processes.
