Significant revision of Introduction -- better reprs, subfigure labels, using trees
Significant revision of Introduction -- better reprs, subfigure labels, using trees

vascotenner/holoviews,ioam/holoviews,mjabri/holoviews,ioam/holoviews,basnijholt/holoviews,vascotenner/holoviews,mjabri/holoviews,mjabri/holoviews,basnijholt/holoviews,vascotenner/holoviews,ioam/holoviews,basnijholt/holoviews