Changes in version 1.1.0 (2020-02-09)                  

    o   class(matrix(...) definitions were recoded to make the package
	compatible for the newer version of R.

    o   Some updates were done for fixing typos and references in some
	man pages.

                 Changes in version 0.1.3 (2019-07-23)                  

    o   A bug for the sum constrait of membership degrees was fixed.

                 Changes in version 0.1.2 (2019-01-19)                  

    o   A vignette was removed to fix some problems to re-build in
	flavor of 'r-devel-linux-x86_64-fedora-clang'.

    o   Some man pages were updated to fix the typographical errors and
	to improve the punctuations.

                 Changes in version 0.1.1 (2018-01-04)                  

    o   DESCRIPTION file was updated for the package names included in
	VignetteBuilder.

    o   NAMESPACES file was updated for the package names for some
	imports.

    o   Some punctuation and typographical errors were fixed in the
	package vignettes.

                 Changes in version 0.1.0 (2017-11-29)                  

    o   ppclust version 0.1.0 was submitted to CRAN, (November 2017)