Changes in version 2022-03-24                      

  - changed some defaults in the plotting function to enable interactive
    visualitations through plotly
  - added a scaling factor to the do.radviz function to counteract the
    compressing effect of a large number of springs
  - plotting functions now use plot.radviz internally to avoid code
    duplication
  - cleaned up links in the documentation

                     Changes in version 2020-11-13                      

  - reinstated the label options in text.radviz
  - implemented anchor filtering for freeviz as a separate function

                     Changes in version 2020-06-24                      

  - fixed hexbin import for hexplot in the hexplot function
  - fixed Rcpp import in do.optimFreeviz and do.optimGraphviz
  - springs()` now returns the spring matrix rather than simply the
    channel names

                     Changes in version 2020-03-27                      

  - fixed hexbin import for hexplot
  - rescalePlot will now issue a warning when some anchors cannot be
    interpreted after rescaling
  - added a filtering option to plot.radviz to remove short anchors in
    Freeviz and Graphviz plots
  - fixed some memory issues related to Freeviz & Graphviz C++ code

                     Changes in version 2020-03-17                      

  - subset now can be used directly on column names from the Radviz
    object
  - optimization of anchor position using the Freeviz method from Demsar
    et al has been implemented by Nicolas Sauwen
  - extended the optimization of anchor position from classes (Freeviz)
    to graphs (Graphviz)

                     Changes in version 2020-02-03                      

  - Fixed a bug related to arguments in smoothRadviz
  - Fixed a bug in do.L where NA is returned if the column contains a
    single value after transformation
  - Fixed a bug in do.radviz where creating Radviz objects from tbl_df
    could throw an error

                     Changes in version 2020-01-10                      

After some testing the following enhancements have been made to the
code:

  - created a theme_radviz function, mostly to enable changing the
    overall font size
  - label.size and label.color options have been reinstated, enabling
    each plot function to change the spring aspects
  - added a springs function to access the channels used for projection
  - fixed a bug where do.radviz would fail on a tbl_df or tibble object
    when some points could not be projected

                     Changes in version 2019-12-18                      

Radviz now uses ggplot2 for plotting, enabling richer options for
labeling and statistics.