Vars format in parser
inside the wdata.c in funciton wdata_parse_metadata_file() we parse the *wtxt file. Issue is that if one uses:
# tag name type unit format
var density_a real MeV npy
then example-read produces
# tag name type unit format
var density_a real MeV wdat
One should adjust it to read npy/dpca/wdat or default -> wdat