Fixed updating of Overlays in MatrixGridPlot
Fixed updating of Overlays in MatrixGridPlot

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