Changes in version 1.2.0 (2025-10-26) - Removed example_hmm.Rmd vignette to avoid CRAN check failure for flavor r-devel-linux-x86_64-debian-gcc (namespace 'fHMM' not available). Changes in version 1.1.0 (2025-07-05) - Adapted to the new {optimizeR} version. - $trace() method transferred to the {trackopt} package. - Some changes in the API. Changes in version 1.0.2 (2023-09-29) - New $trace() method to capture the steps during optimization with stats::nlm(). Changes in version 1.0.1 (2023-06-05) - Minor bug fixes. Changes in version 1.0.0 (2023-05-31) - The package is now based on an R6 class called Nop. See the documentation ?Nop for details. Changes in version 0.1.0 (2022-07-16) - Initial version.