Release v1.2.0

Added%0A- New authentication system for API endpoints%0A- Support for dark mode in the dashboard%0A%0A### Changed%0A- Improved performance of database queries%0A- Updated dependencies to latest versions%0A%0A### Fixed%0A- Bug in user registration process%0A- Memory leak in background processing%0A%0A### Deprecated%0A- Legacy authentication method, to be removed in 2.0.0