Hello and thanks for xarray!

I started developing the nxarray package, which is aimed to bring NeXus input/output capabilities to xarray. Loading is based on nexusformat, returning an xarray dataset, while saving and conversion to NeXus is implemented as xarray accessor 'nxr'.

This issue is primarily informative (as suggested in the wiki for new accessors) but most importantly its aim is to share comments/ideas on the best implementation of such NeXus support (and whether an accessor is the best choice at all).

I know that xarray uses netCDF as default format, but still NeXus is really spreading in my scientific community and would be great to have an easy interoperability with the powerfulness of xarray.