Sup, whats up?
Having fantastic news, I am adding "Set Bonuses" and "Item Stacking" at the moment, while ItemForging already works.
You also have the option to enable bonusstacking, meaning if you have for example, an item of type clawns of attack +6 and 2 charges, it will become +12, if you enabled it.
Normal items without charges (or endless) do give normal bonuses. (*1)