Updated the PlotRenderer Exporter to the new export semantics
Updated the PlotRenderer Exporter to the new export semantics

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