Changes in version 4.1.1 (2025-09-15)                  

  - Fix for tests for M1Mac

                 Changes in version 4.1.0 (2025-09-13)                  

  - Maintainer email update
  - Added unit tests
  - Added package doi

                 Changes in version 4.0.2 (2025-08-20)                  

  - A suggest field fix to cope with CRAN requirements about the use of
    packages in demos.

                 Changes in version 4.0.1 (2023-03-21)                  

  - Update links to the webpage of the 4th edition of the book of the
    package. Update cover page image of the book. Update demo code. A
    few code fixes to cope with new CRAN requirements.

                 Changes in version 4.0.0 (2022-11-28)                  

  - Upgrade of the package for the fourth edition of the book. Update
    maintainer email address.

                 Changes in version 3.1.2 (2021-03-14)                  

  - Update to Roxygen and fix CRAN notes.

                        Changes in version 3.1.1                        

  - Update of the reference to the book in the description file.

                        Changes in version 3.1.0                        

  - Added a NEWS.md file to track changes to the package.

                 Changes in version 3.0.0 (2019-01-26)                  

  - Upgrade of the package for the third edition of the book. Code for
    each chapter of the 3rd edition is now included as as demos.

                 Changes in version 2.0.0 (2014-08-28)                  

  - Upgrade of the package for the second edition of the book. Code for
    each chapter is now included as demos.

                 Changes in version 1.0.4 (2012-03-30)                  

  - Fixed non ascii character.

                        Changes in version 1.0.3                        

  - Upgrade of plotcdf2.

                 Changes in version 1.0.2 (2010-08-17)                  

  - Minor fixes of help files due to CRAN request.

                 Changes in version 1.0.1 (2010-07-29)                  

  - All the datasets and functions for the book are ready.

                 Changes in version 1.0.0 (2009-12-14)                  

  - CRAN test version.