Changes in version 1.2.4 (2025-09-22) - Resubmit after truncSP Changes in version 1.2.3 (2025-05-27) - Update maintainer email Changes in version 1.2.2 (2021-01-12) - Add optim() in search and update searching algorithm - Fixed bugs in piecewise models - Re-calculate the censoring survival estimates with Nelson-Aalen estimate when there the KM estimates drop to 0 at early times. - Set robust = FALSE in coxph() to avoid calculating robust variance estimator when a is extreme. Changes in version 1.2.1 (2020-07-28) - Use grid search (rootSolve then optim) in finding a - Updated piecewise model so a is optimized globally - Added goodness of fit test Changes in version 1.2.0 (2019-05-24) - Passed CRAN checks - Added regression method, trReg()