Changes in version 4.0.1                        

  - Added grid_search_iter to DPTS() and Threshold_Test() for
    coordinate-refinement cycles after deterministic grid search.
  - For multiple thresholds, one refinement cycle re-estimates each
    threshold conditional on the other current thresholds and sorts the
    final thresholds.
  - Printed grid-search results now report the number of refinement
    iterations.

                        Changes in version 4.0.0                        

  - Added grid_search, grids, and grid_search_type to DPTS() and
    Threshold_Test() so unknown thresholds can be searched by MCMC,
    joint grid search, or sequential grid search.
  - Shared threshold-design construction across fixed-threshold fitting,
    MCMC search, and grid search to reduce duplicated model-building
    code.
  - Improved bootstrap retry handling in Threshold_Test() and made the
    parallel backend shutdown explicit.
  - Clarified README and help pages for MCMC versus grid-search
    threshold estimation.

                 Changes in version 3.0.2 (2025-03-21)                  

                        Changes in version 3.0.0                        

  - Rewrote the entire package in OOP (R6 class).
  - Detailed instructions and examples have been added to make it more
    user-friendly.
  - The formula interface of R language is exploited, which is more
    standardized and easy to use.

                        Changes in version 2.0.0