[mrtracy]

This release has Observer and Hooks which in my opinion really elevate the ability to express complex, reusable structures in the ECS.

For example, one of the well-known challenges in the paradigm is working with hierarchies or graphs - observers are a powerful tool for communicating between specific entities, and should make this a lot easier to express.

Hooks offer the ability to enforce cross-component consistency in a way that wasn’t previously available.