Renamed a few fields; added one comment
Renamed a few fields; added one comment

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