Method init

Fleece/Core/Encoder.cc:57–63

    Encoder::~Encoder() =default;

    void Encoder::init() {
        // Initial state has a placeholder collection on the stack, which will contain the real
        // root value.
        resetStack();
        _items->reset(kSpecialTag);
        _items->reserve(1);
    }

    void Encoder::resetStack() {
        _items = &_stack[0];