rbbnp 0.2.0

Major Improvements

• Improved performance of get_est_Ar() function by approximately 50%, significantly accelerating main function execution time
• Added unit tests to ensure package reliability and stability

Performance Optimization

• Optimized get_est_Ar() function by:
  • Precomputing avg_phi_log values for all frequencies
  • Enhancing the optimization algorithm

Bug Fixes and Edge Case Handling

• Modified get_sigma() and get_sigma_yx() to handle negative density estimates by returning 0 instead of NaN
• Enhanced get_conditional_var() to ensure non-negative variance estimates
• Fixed sinc() function to properly handle x = 0 cases

Function Refactoring

• Added create_biasBound_config() function for centralized configuration management
• Added create_kernel_functions() factory for flexible kernel function creation