Upgradable Potions allows to create stronger potions out of weaker potions. Created with late game in mind, for everybody who obtained hundreds of weak potions that are now way too weak to be useful. Heavily inspired by recipes from Elex 1. Each recipe requires one less Chemistry skill level than normal recipe for same potion.

New recipes:

• 2 x Small Healing Potion -> Medium Healing Potion
• 2 x Medium Healing Potion -> Strong Healing Potion (requires Chemistry level 1)
• 2 x Strong Healing Potion -> Mighty Healing Potion (requires Chemistry level 2)
• 2 x Small Elex Potion -> Medium Elex Potion (requires Chemistry level 2)
• 2 x Medium Elex Potion -> Large Elex Potion (requires Chemistry level 2)
  

• Each potion works like a recipe for itself, and that means player can't create potion so for example to create mighty healing potion player needs to already have at least one mighty healing potion in inventory to create new ones from medium healing potions.
• Drinking effect in potion description is now listed twice. It doesn't affect how potion works when drunk, just description.