@hackage ecstasy0.2.1.0

Ecstasy is an entity-component system for Haskell. It's inspired by apecs, but makes the design decision to focus on being idiomatic rather than being fast. Maybe. I haven't actually benchmarked it.

We achieve being idiomatic by using GHC.Generics and tricky type families to derive performant data stores given only a record of the desired components.