visNetwork in vis_epicontacts() has been fixedvis_epicontacts() gains an x_axis argument to specify a column to use for displaying dates.vis_epicontacts() and plot() now both use same default thinningvis_epicontacts() now accepts fontawesome icon codes for node shapes
graph3D() will now plot an igraph object direct thanks to updates in threejs API
make_epicontacts now handles contacts provided as factors
added URL of website and issue system to DESCRIPTION
replaced javascript graphics in README.md with screenshots - these were not rendering on github