Changes in version 0.4.0 (2025-08-21)                  

  - Added echenor() for normal model support.

                 Changes in version 0.3.1 (2025-03-21)                  

  - Optimized part of the source code.

                 Changes in version 0.3.0 (2025-03-03)                  

  - Overall improvements to the source code algorithms, including the
    addition of C++ code.

                 Changes in version 0.2.0 (2024-02-09)                  

  - Minor bugs fixed.

                 Changes in version 0.1.0 (2020-01-09)                  

  - This is the initial release of echelon on CRAN.