Cats instances should not require lazy val

[Avasil]

When I changed instances of typeclasses to be shared in #67
e.g.

/** Global instance for `cats.CommutativeApplicative`
  */
implicit def commutativeApplicative[E]: CommutativeApplicative[BIO.Par[E, ?]] =
  commutativeApplicativeAny.asInstanceOf[CommutativeApplicative[BIO.Par[E, ?]]]

private[this] final lazy val commutativeApplicativeAny: CommutativeApplicative[BIO.Par[Any, ?]] =
  catsParallelAny.applicative

I had to do lazy val instead of a val, even if this val was unused. Otherwise BIO couldn't be initialized. It works for some of the instances though, e.g.

implicit def timer[E]: Timer[BIO[E, ?]] =
  timerAny.asInstanceOf[Timer[BIO[E, ?]]]

private[this] final val timerAny: Timer[BIO[Any, ?]] =
  new Timer[BIO[Any, ?]] {
    override def sleep(duration: FiniteDuration): BIO[Any, Unit] =
      BIO.sleep(duration)

    override def clock: Clock[BIO[Any, ?]] =
      BIO.clock
  }

I feel like the only difference is that the instance is created in the same file but I don't know why does it cause a difference.