Adapt original Ink API

// 1) Load story
story := ink.load(source_json_string);

// 2) Game content, line by line
for story.can_continue {
    fmt.println(ink.continue(&story));
}

// 3) Display story.current_choices list, allow player to choose one
fmt.println(story.current_choices[0].text);
ink.choose_choice_index(&story, 0);

• Parse different objects into different types (not just map[string]Element)
• Parse JSON into internal story structure with own types
• Apply choice elements to story from its stack
• story_continue goes through story and builds current_text and current_choices

• Text lines should be optimized: "^line" and next "\n" concatenated