retrieve IndividualGenotypeFeatures instead of IndividualGenotypes, lazy-load VCF object on demand
retrieve IndividualGenotypeFeatures instead of IndividualGenotypes, lazy-load VCF object on demand

willmclaren/ensembl-variation,Ensembl/ensembl-variation,dbolser/ensembl-variation,Ensembl/ensembl-variation,Ensembl/ensembl-variation,dbolser/ensembl-variation,willmclaren/ensembl-variation,Ensembl/ensembl-variation,Ensembl/ensembl-variation,willmclaren/ensembl-variation,dbolser/ensembl-variation,willmclaren/ensembl-variation,dbolser/ensembl-variation,willmclaren/ensembl-variation