Evaluate and potentially switch to use ClinVar's new VCV xml dump file

[newgene]

VCV (variation in ClinVar) is a new variant-centric XML schema. More at https://pubmed.ncbi.nlm.nih.gov/31777943

MyVariant.info current imports data from ClinVar's original ClinVarFullRelease_*.xml.gz XML files (based on old RCV schema - no VCV content) at https://ftp.ncbi.nlm.nih.gov/pub/clinvar/xml/

The newer ClinVarVariationRelease_*.xml.gz XML files (based on VCV schema - includes all data in ClinVar) are at https://ftp.ncbi.nlm.nih.gov/pub/clinvar/xml/clinvar_variation/

Some variant-level aggregated interpretation, review status and explanation may only be available in VCV file.

[obigriffith]

+1. CIViC would be very keen to display ClinVar aggregated classifications from myvariant.info!