SPECS
    LOGIC
        # - sellIn decreases every day
        - Item.quality
            # - is >= 0 && <= 50
            # - decrements with number of days until sellIn is 0 then with the double of it
        - Sulfuras
            # sellIn = 0 // doesnt change
            # quality is 80 and does not decrease
        - AgedBrie increases in quality
        - BackstagePasses
            increases in quality like AgedBrie
                sellIn <= 0 - quality = 0
                sellIn <= 5 -> increment by 3
                sellIn <= 10 -> increment by 2

    TODO
        - add support Conjured items
            degrade in quality twice as fast as normal items