Weapon , Armor and Tool Upgrade Kits have changed. Details:
Armor Reduction Kits: Lower the weight of the armor by 40% from stripping away parts of the armor. This also will lower the protection of the armor by 10% and causes it to lose a small about of durability. (For realism)
Armor Plating: No longer lowers durability and Is now 3 times more effective than before. Using this will also increase the weight of the armor but only slightly , since you are adding plating to the armor it seemed logical that a small amount of weight should be added as well.
Armor Flexibility Kit: No longer causes durability loss.
Balanced Weapon Fitting: No longer causes durability loss.
Paring Blade: Unchanged, it still lowers the durability of the weapon since you are shaving it down to make it lighter
Blunted Weapon Fittings: No longer causes durability loss.
Weapon Damage Kit: Is now 33% more effective than before. Increasing the damage a weapon does without any durability loss.
Reinforcement Kits: Are 6x more effective than before. Since reinforcements are being added to the weapon or armor to make it more durable it will slightly increases the weight of the item.
Tool Upgrade Kits: No longer causes durability loss.
Spiked Weapon Fitting: No longer causes durability loss.

Legendary chests can be opened at any level. You managed to get your hands on a key then should be able to unlock a chest

Sustainable plants: Plants now yield one seed and continue to produce depending on how much compost is used.