1.0.22

• Add accessors for the size and alignment of an opaque Rust type (#597)

    namespace rust {
  +   template <typename T> size_t size_of();
  +   template <typename T> size_t align_of();
    }

• Expand API of rust::Slice<T> in C++ (#598)

    template <typename T>
    class Slice {
    public:
      ...
  +   bool empty() const noexcept;
  +   T &operator[](size_t n) const noexcept;
  +   T &at(size_t n) const;
  +   T &front() const noexcept;
  +   T &back() const noexcept;
    };

• Expand rust::Slice<T>::iterator from a forward-only iterator to random access iterator (#599)

• Support using rust::Slice<T> with T an opaque Rust type, previously limited to shared types only (#600, #601, #602, #603)