v2.0.0

Changed

• Refactored plugin into OOP architecture with PSR-4 autoloading under TomMcFarlin\MMN namespace
• Mute preference is now stored per-user in wp_usermeta instead of a single site-wide wp_options row
• Notifications are now hidden server-side via inline CSS in admin_head, eliminating flicker on page load
• Toggle button uses POST instead of GET for the AJAX request
• Admin bar button now shows state-aware label ("Mute Notifications" / "Unmute Notifications") with dashicon
• Hidden elements use display: none instead of visibility: hidden to eliminate layout gaps
• JavaScript loads in the footer and is browser-cacheable with a static version string
• Removed the on-page-load AJAX call; mute state is passed to JS via wp_localize_script

Added

• Self-hosted updater via GitHub Releases using the update_plugins_github.com filter (WP 5.8+)
• Per-user mute preference so each administrator has an independent toggle state
• ARIA attributes, keyboard navigation, and screen reader support
• Visual error feedback when AJAX toggle fails
• Capability check (update_plugins) on AJAX handler and admin bar button
• Nonce verification via check_ajax_referer()
• uninstall.php for proper cleanup on plugin deletion
• Unit tests with PHPUnit and Brain Monkey (31 tests, 40 assertions)
• WPCS compliance

Removed

• Deactivation hook (replaced by uninstall.php)
• Second AJAX endpoint no longer needed
• Dead URLSearchParams code in JavaScript

Security

• All AJAX handlers now verify current_user_can( 'update_plugins' )
• Admin bar toggle and assets only render for authorized users