Antoine Guillot

Add new chart type

1

Add new chart types: * Collapsible tree: https://bl.ocks.org/mbostock/4339083 * Dendogram https://bl.ocks.org/mbostock/4063570 (Zooming policy ??) * Radial Cluster https://bl.ocks.org/mbostock/4339607 (Zooming policy ??) * Zoomable treemap http://bl.ocks.org/ganeshv/6a8e9ada3ab7f2d88022 * Other ideas ??

Add a parameter to set_legend_parameters to modify legend style. The other possibility is to add a new function (set_legend_style ??)

As presented in this example: https://bl.ocks.org/mbostock/4063582

Add unit test to the R code.

Verify of hclust object could be supported by D3partitionR while keeping the interface consistency.