Fix to regular sampling in HoloMap.sample
Fix to regular sampling in HoloMap.sample

Now correctly computes bounds from Elements

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