Traverse lesson, running examples with cats 1.0.0-MF

[Fabs]

Hello people :).

I am trying to run the following code on a scala worksheet scala 2.12.4, sbt 1.0.3, cats 1.0.0-MF:

import cats.Semigroup
import cats.data.{NonEmptyList, OneAnd, Validated, ValidatedNel}
import cats.implicits._

implicit def nelSemigroup[A]: Semigroup[NonEmptyList[A]] =
  OneAnd.oneAndSemigroupK[List].algebra[A]

def parseIntEither(s: String): Either[NumberFormatException, Int] =
  Either.catchOnly[NumberFormatException](s.toInt)

def parseIntValidated(s: String): ValidatedNel[NumberFormatException, Int] =
  Validated.catchOnly[NumberFormatException](s.toInt).toValidatedNel

List("1", "2", "3").traverseU(parseIntEither)
List("1", "abc", "3").traverseU(parseIntEither)

But OneAnd apparently does not have oneAndSemigroupK, and I was also not able to find this in the scaladoc for cats. Maybe it is obvious, but I don't now how to implement the implicit so my List will have traverseU

Error is:

Error:(6, 11) value oneAndSemigroupK is not a member of object cats.data.OneAnd
  OneAnd.oneAndSemigroupK[List].algebra[A]
         ^