Memory management utilities for Koto
Currently, only reference-counted pointers without cycle detection are implemented.
The intent is that this crate can be expanded in the future with implementations of
Ptr and PtrMut that offer alternative memory management strategies.
Making custom GC types that support trait objects or other DSTs is currently only possible with nightly Rust, while the stabilization of DST custom coercions is pending [^1]. Until then, GC implementations for Ptr/PtrMut could be introduced with a nightly-only feature.