Fixed and optimized Bokeh DownsampleColumns callback
Fixed and optimized Bokeh DownsampleColumns callback

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