message: making more Card class properties readonly
diff: @@ -88,18 +88,16 @@ export class Card {
  readonly csFiles: CardFiles | undefined;
  readonly csPeerDependencies: PeerDependencies | undefined;
  -
  readonly csFieldSets: OcclusionFieldSets | undefined;
  -
  private readonly csFields: { [name: string]: any } | undefined;
  private readonly csFeatures: { [name: string]: string | [string, string] } | undefined;
  // if this card is stored inside another, this is the other
  readonly enclosingCard: Card | undefined;
  - private attributes: SingleResourceDoc['data']['attributes'];
  - private relationships: SingleResourceDoc['data']['relationships'];
  - private meta: SingleResourceDoc['data']['meta'];
  + private readonly attributes: SingleResourceDoc['data']['attributes'];
  + private readonly relationships: SingleResourceDoc['data']['relationships'];
  + private readonly meta: SingleResourceDoc['data']['meta'];
  // Identity invariants:
  //
  