read.haplo.shapeit_haps(filename, map, chr, startpos, endpos).haps file containing
haplotype data which is regular ShapeIt output. See
https://mathgen.stats.ox.ac.uk/genetics_software/shapeit/shapeit.html#hapsamplereadMapFile.read.haplo,
read.haplo.pedfile,
read.haplo.bedfile,
readMapFile