Standard Perk 1: Changed description "...damage from swimming, and can breathe underwater." -> "... damage from water."
Standard Perk 2: Removed Underwater Undetectable effect.
Standard Perk 2: Added Waterbreathing Effect.
Standard Perk 2: Changed description "You become totally undetectable while submerged." -> "You're like a fish in the ocean and can breathe underwater."
Standard Perk 3: Added Perk Level 3
Standard Perk 3: Added Underwater Undetectable effect.
Standard Perk 3: Added Description "You become totally undetectable while submerged."
Standard Perk 3: Increased Minimal level requirement "lvl21" -> "lvl25".
