Replace Hydrate
Adds the feature requests from #124? and #206 Currently still a draft as there are still a lot of question marks and #124 still needs design.
Currently having question marks on what to do with PropertyOf and ChildOf.
PropertyOf currently returns a Computed wrapping a value to create a read-only state, but the current issue is that we create a connection that updates the value (and thus the computed) whenever the property is changed. How will we ensure this connection is cleaned up with the Computed when it is no longer used?
ChildOf also is a weird one. Do we have to support states here? Should it return a state? Currently it's just a fancy wrapper for :FindFirstChild so what do we do here?
There hasn't been a lot of motion on this issue, and Fusion's seen fundamental changes in the intervening time, so I'm closing this PR for now.