message: read cif-core bfactor field
diff: @@ -124,6 +124,7 @@ async function getModels(db: CifCore_Database, format: CifCoreFormat, ctx: Runti
  pdbx_formal_charge: formalCharge,
  pdbx_PDB_model_num: Column.ofConst(1, atomCount, Column.Schema.int),
  + B_iso_or_equiv: db.atom_site.U_iso_or_equiv,
  }, atomCount);
  const name = (
  