CFilt 1.0.0

Breaking changes

• The package architecture has been redesigned: CFilt is now fully based on R6 classes, replacing the previous S3/OO implementation.
• Several legacy methods have been removed, including setnewuser() and setnewitem(). Equivalent functionality is now handled by updated class methods.
• The internal data structures have changed, and objects created in previous versions are not fully compatible with this release.

Improvements

• Significant performance improvements through the adoption of sparse matrix representations (Matrix package), reducing memory usage and computation time.
• Optimized update procedures for user-item and item-item similarity matrices.
• Improved scalability for larger datasets.

Documentation

• Updated function documentation to reflect the new R6-based architecture.
• Examples revised to match the current class usage.

Internal changes

• Refactored internal methods to improve efficiency and maintainability.
• Updated dependency usage and removed unused imports.