v2.0.0.0-RC3

• Use ZIO 1.0.0-RC12-1
• Use Cats Effect 2.0.0-RC2
• Enable interop for ScalaJS, all ZIO Cats instances are now available on Scala.js (#28)

Breaking changes:

• Alternative instance for ZIO has been removed due to being unlawful (#28)
• Schedule methods now require Effect or LiftIO instead of ConcurrentEffect (#44)