CS170 Project 2 Part 2 Release

This release contains the full implementation of the Part II requirements for CS170 Project 2. It extends the Part I codebase by adding a complete 1-Nearest Neighbor (1-NN) classifier, dataset normalization, and a full Leave-One-Out Cross Validation (LOOCV) validator. These components are integrated with the existing feature-selection framework and follow all specifications in the project handout.