• Adds option to merge JSON translations when syncing from PO
• Adds screen for editing file headers and sync options
• Fix for missing responseText in failed Ajax responses
• Fix for HTML entities returned from number_format_i18n
• Localized number formatting in JavaScript
• Replaced usage of date_i18n with wp_date
• Added configurable API endpoint for DeepL
• Bumped WordPress version to 5.7.2