WARNING: will not work with region = "genome". For this
you must first read with region = "unknown", then
convert the cat96 return to "genome" and
ignore the cat192 return, which is nonsensical.
ReadDukeNUSCat192(file, ref.genome = NULL, region = "unknown",
catalog.type = "counts", abundance = NULL)A list with two elements
The file needs to have the column names Before Ref After Var in the first 4 columns