Release v2.0.1

Changed

• Redesigned Interactive Playground with improved UI/UX:
  • New top/bottom layout replacing the previous section-based design
  • Tab-based navigation for all 7 API functions (get_at, set_at, exists_at, delete_at, get_depth, count_leaves, get_all_paths)
  • Live stats bar showing data metrics (Depth, Leaves, Paths) in real-time
  • Live Python code preview with copy-to-clipboard functionality
  • Improved example selector with quick-switch buttons
  • Dark-themed JSON editor with syntax validation
  • Better responsive design for mobile devices