message: struct_conn tweaks
diff: @@ -138,8 +138,6 @@ export namespace StructConn {
  partners: { residueIndex: ResidueIndex, atomIndex: ElementIndex, symmetry: string }[]
  }
  - type StructConnType = typeof mmCIF_Schema.struct_conn.conn_type_id.T
  -
  export function attachFromMmCif(model: Model): boolean {
  if (model.customProperties.has(Descriptor)) return true;
  if (model.sourceData.kind !== 'mmCIF') return false;
  @@ -213,7 +211,7 @@ export namespace StructConn {
  const partners = _ps(i);
  if (partners.length < 2) continue;
  - const type = conn_type_id.value(i)! as StructConnType;
  + const type = conn_type_id.value(i) as typeof mmCIF_Schema.struct_conn_type.id.T; // TODO workaround for dictionary inconsistency
  const orderType = (pdbx_value_order.value(i) || '').toLowerCase();
  let flags = LinkType.Flag.None;
  let order = 1;
  @@ -234,7 +232,10 @@ export namespace StructConn {
  flags = LinkType.Flag.Covalent;
  break;
  case 'disulf': flags = LinkType.Flag.Covalent | LinkType.Flag.Sulfide; break;
  - case 'hydrog': flags = LinkType.Flag.Hydrogen; break;
  + case 'hydrog':
  + case 'mismat':
  + flags = LinkType.Flag.Hydrogen;
  + break;
  case 'metalc': flags = LinkType.Flag.MetallicCoordination; break;
  case 'saltbr': flags = LinkType.Flag.Ionic; break;
  }
  