Hi! Adding a link to a some-batteries-included Haskell Unleash SDK. It
uses a "core" library underneath that adheres to your [Client
Specifications](https://github.com/Unleash/client-specification). Could
add a link to that too, but from what I can tell, it's overlapped by
your Yggdrasil project. We have been using the SDK for a handful of
months now and we're happy with how it works. Hope you'll have it :)
Co-authored-by: Even Brenden <evenbrenden@users.noreply.github.com>
