instrument code with last split speed
3-fold speedup of cis-splitting script
dumping cis-ranges does not require genotype data in input
typo
fix summary stats reporting
rm old comment block
rm spurious trailing slash
suppress potential err messages from gzip
massively speedup data-cis-split

splitting 12M SNPs x 50k genes x 50Kb might take 2mins instead of 20h
drop dangling connection to gt file