merge potions to make them stronger
1 potion = 1x
2 potions = 1.5x
3 potions = 2x
etc
this will be good if oyu are trying to do potion stacking, because the inventory only allows for 10 potions at once, say you want to be really fast strong and have lots of health but also want to have splash potions of the same kind, this is where it would be helpful