writing metadata to vaex private dir for non-hdf5 files, reading ucd and units for fits files
writing metadata to vaex private dir for non-hdf5 files, reading ucd and units for fits files

maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex