0.5.2 - rename XxxNow() to XxxTestNow() to avoid name collisions

• 0.5.2 (2018-05-08)
  • Rename failNow(), passNow(), skipNow(), expireNow() macros to
    failTestNow(), passTestNow(), skipTestNow(), expireTestNow() to reduce
    the chance of name collision.