Chu-Ko-Nu Historical Rebalance

The Chu-ko-nu was a repeating crossbow made possible by advances in iron metal casting in late antiquity, but the original Civ7 version is available from 4000-ish BC and replaces the slinger. This mod moves the Chu Ko Nu from Animal Husbandry to Bronze Working, replacing the Archer instead of the Slinger. The base Chu-Ko-Nu now has the stats that the level 2 Chu-Ko-Nu used to have. The level 2 Chu-Ko-Nu is now unlocked at Iron Working (which is relatively late, granted) but is by far the strongest ranged unit in the Antiquity Age, as it's now the only tier-3 ranged unit. Both units are 5 production cheaper than their base unit (though there is no base ranged unit at Iron Working) and they scale off of Iron resources (+1 combat per resource) as Infantry units do. I'm not claiming that this is a balanced or better unit in-game, but it is more historically accurate. Spoiler Tier-1 Chu-Ko-Nu gaining combat strength from Iron :