NEWS

DPTM 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.

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.

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.