fs2

We sometimes have data types which subtype Ordered and other times have types which implement Ordering. We only need to do Ordering. We should ensure that all types which are Ordered also have an Ordering instance.

Context: http4s/http4s#5013 (comment)

full example from https://github.com/tpolecat/skunk/blob/v0.0.24/modules/docs/src/main/paradox/tutorial/Command.md
gives following compile errors

skunk-world/src/main/scala/CommandExample.scala:42:34
not found: type *
  def fromSession[F[_] : Bracket[*[_], Throwable]](s: Session[F]): PetService[F] =

skunk-world/src/main/scala/CommandExample.scala:42:24
cats.effect.Bracket[<error>,Thro

Similarly to #234, it would be useful to provide functions for creating test KafkaProducers.

A good first function would be one which yields somewhat sensible default RecordMetadata.

object KafkaProducer {
  def unit[F[_], K, V](implicit F: Sync[F]): F[KafkaProducer[F, K, V]] = ???
}

Likely, this would require some internal state, hence F[KafkaProducer[F, K, V]].

See

• https://47deg.github.io/sbt-microsites/
• in conjunction with http://tpolecat.github.io/tut/