message: test(case): update case class example
diff: @@ -5,8 +5,8 @@ import * as S from "../src/Structural"
  describe("Case Class", () => {
  it("should work with equal and hash", () => {
  class Person extends Case.Case<Person> {
  - readonly firstName!: string
  - readonly lastName!: string
  + readonly firstName: string = this["firstName"]
  + readonly lastName: string = this["lastName"]
  }
  const person = new Person({ firstName: "Michael", lastName: "Arnaldi" })
  @@ -37,9 +37,9 @@ describe("Case Class", () => {
  }
  class Person extends Case.Case<Person> {
  - readonly key!: Key
  - readonly firstName!: string
  - readonly lastName!: string
  + readonly key: Key = this["key"]
  + readonly firstName: string = this["firstName"]
  + readonly lastName: string = this["lastName"]
  }
  const personA = new Person({
  