Changes in version 2025-05-20                      

  - drop CXX_STD = CXX11 according to the check results.

                     Changes in version 2023-01-10                      

  - performance improvement through avoiding repetitive estimation.

  - polish structures.

                     Changes in version 2021-09-18                      

  - export print.plfd method.

  - update documentation.

                     Changes in version 2021-09-17                      

  - small patch in light of planned Rcpp change
    (https://github.com/RcppCore/Rcpp/issues/1158).

  - update documentation.

                     Changes in version 2021-08-07                      

  - initial version