Seperate the sub actor stuff and RequestResponse.
Merge branch 'master' of github.com:msiegenthaler/ScalaSessionTypes

Conflicts:
	src/main/scala/sst/ActorIntegration.scala
Fix bug with Remove from Coproduct.
Handler only on type, does not need On-instance anymore.
Add akka dependency.
Add RequestResponse for more then 2 options.
Fix return type handling in Handler.handle.
Restructure RequestResponse (without enclosing object).
Remove description from object, since it only saves one char.
Remove ActorIntegration, will be replaced with AkkaIntegration.
Add akka integration.
Cleanup imports.
Fluent style ConvertNumber declaration.
Extract CoproductOps from Handler.
Rename Handle to Handler and add documentation.
Add type level concat of Coproduct.
Generalize Response AnyOf-parsing.
Add support for left-bound anyof in Response.
Add akka an compile instead of provided.
More fluent example.