initial checkin
finish parsing ## lines
header parsing finished (not well tested)
towards parsing VCF
BCFv2 quick reference
code backup
a bit code restructuring
encode up to the INFO field
VCF=>BCF, up to QUAL
bcf->vcf, up to FILTER
bcf->vcf, up to INFO
change long to int32_t
towards parsing genotype fields (unfinished)
a little code cleanup
parse genotype fields; not tested yet
restructure the code a bit
to restructure decoding
restructure decoding
working on printing genotypes; not working yet
fixed one bug, more to fix