Module memory

Less used details of UniquePtr and SharedPtr.

The pointer types themselves are exposed at the crate root.

Re-exports

• pub use cxx::SharedPtr;
• pub use cxx::UniquePtr;

Traits

• SharedPtrTarget
  Trait bound for types which may be used as the T inside of a SharedPtr<T> in generic code.
• UniquePtrTarget
  Trait bound for types which may be used as the T inside of a UniquePtr<T> in generic code.
• WeakPtrTarget
  Trait bound for types which may be used as the T inside of a WeakPtr<T> in generic code.