Swift variant of (FB)KVOController

Question

I'd like to attempt to migrate/reimplement my app to Swift. I've done some tutorials and examples and want to try a "real" app now. My current app uses the KVOController cocoapod quite a bit though. So I'm looking for something (preferably as a pod) that could be a replacement in my Swift implementation. Are there any yet? Something that was as semantically similar to KVOController as possible would be preferrable.