message: Adding toJSON method to the Person class.
  Ideally I think all those methods should be getters instead.
diff: @@ -122,6 +122,22 @@ export class Person extends Profile {
  return new Person(profile)
  }
  + toJSON() {
  + return {
  + profile: this.profile(),
  + name: this.name(),
  + givenName: this.givenName(),
  + familyName: this.familyName(),
  + description: this.description(),
  + avatarUrl: this.avatarUrl(),
  + verifiedAccounts: this.verifiedAccounts(),
  + address: this.address(),
  + birthDate: this.birthDate(),
  + connections: this.connections(),
  + organizations: this.organizations()
  + }
  + }
  +
  profile() {
  return Object.assign({}, this._profile)
  }
  