Changes in version 0.3.0 (2017-02-25)                  

  - added coordinate transformation function and related vignette

  - improved vignettes

  - added some basic 3D drawing functions

                 Changes in version 0.2.2 (2016-10-17)                  

  - bugfixes as a reaction to CRAN checks

  - replaced plotly with rgl in the vignettes

                 Changes in version 0.2.1 (2016-09-19)                  

  - preparations for CRAN release

                        Changes in version 0.2.0                        

  - creation of some functions for the analysis of Kakcus-Turjan - see
    vignette

  - reorganisation of previous functions (renaming, translation into
    Rcpp)

                        Changes in version 0.1.0                        

  - creation of some functions for the analysis of Ifri el Baroud - see
    vignette