Traverse derived from ParEffectful parMap2.
Traverse derived from ParEffectful parMap2. If used with IO in F[_] position it will wait for all the effectful computations to complete and will aggregate all the eventual errors in a CompositeException. See here for possible usage
https://github.com/barambani/http4s-poc-api/blob/master/src/main/scala/service/ProductRepo.scala#L33