Changes in version 2.1.3 (2025-10-18)                  

  - Fixed bugs depending on recent upgrade of RcppArmadillo.

                 Changes in version 2.1.2 (2025-07-22)                  

  - Fixed bugs.

                Changes in version 2.1.1.1 (2022-11-16)                 

  - Fixed bugs.

                 Changes in version 2.1.1 (2019-09-17)                  

  - Fixed bugs.

                        Changes in version 2.1.0                        

  - Fixed bugs.

                 Changes in version 2.0.2 (2018-10-22)                  

  - Fixed bugs.

                 Changes in version 2.0.1 (2018-10-22)                  

  - Fixed C++ issues.

                  Changes in version 2.0 (2018-10-15)                   

  - New C++ routines.
  - Automatic selection of the number of clusters.
  - Added functions for fuzzy relational clustering algorithms.
  - Added function for fuzzy clustering similarity measures.