Hydrofarm 0.2.5

Fixed

• XP Drain no longer loses or duplicates small amounts of Liquid XP. Liquid XP is tracked in 1 mB units while each XP point is worth 20 mB, so moving XP to or from a pool whose amount wasn't an exact multiple of a full point could destroy a sub-point remainder (on the right-click pull-back) or bank a few extra mB the player wasn't charged for (on the sneak-drain). Both paths now return the leftover fraction, so a transfer moves exactly the XP that was converted.