Diverging implicit extension for UIO when importing cats instances

[Katrix]

Scala will fail to compile code like this.

import cats.Monad
import cats.instances.either._
import scalaz.zio._
import scalaz.zio.interop.catz._

class ZIODiveringTest {
  Monad[UIO]
}

Removing the import for the either allows it to compile. Also works with option's instances. Does not happen for some reason when importing all instances.

Here is the error gotten

[error] D:\DevProjects\Stable\Ore\ore\app\ZIODiveringTest.scala:7:8: diverging implicit expansion for type cats.Monad[scalaz.zio.UIO]
[error] starting with method monoidZManagedInstances in trait CatsZManagedInstances
[error]   Monad[UIO]
[error]        ^

[joroKr21]

This is fixed by #28