Fixed and cleaned up AttrTree.__getitem__
Fixed and cleaned up AttrTree.__getitem__

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