callset -> callsample, add variantset
callset -> callsample, add variantset

Also replaced contig with referenceSequenceName
saupchurch/schemas,lh3/schemas,hjellinek/schemas,benedictpaten/schemas,nlwashington/schemas,ga4gh/ga4gh-schemas,heuermh/ga4gh-schemas,sarahhunt/schemas,buske/schemas,Jeltje/ga4gh-schemas,dglazer/schemas,pcingola/schemas,laserson/schemas,ga4gh/schemas,hjellinek/schemas,dcolligan/schemas,adamnovak/schemas,delagoya/schemas,hjellinek/jeltje-schemas-sphinx,delagoya/schemas,dnanexus-rnd/schemas,Jeltje/ga4gh-schemas,diekhans/ga4gh-schemas,dnanexus-rnd/schemas,laserson/schemas,macieksmuga/schemas,kellrott/schemas,benedictpaten/schemas,kellrott/schemas,buske/schemas,diekhans/ga4gh-schemas,adamnovak/schemas,sarahhunt/schemas,lh3/schemas,nlwashington/schemas