Major content update

+ Boo! Added 59 spooky items, all under the new "Spooky Specials" tab!
+ Over 80+ new pre-unlocked items!
+ 42 new unlockable bonus items!
+ Added the duplicate feature! Select an item in the world and press the duplicate button on the bottom right corner.
+ Added new performance settings! If your device can't handle your large world, try reducing the performance settings.
+ Added advanced settings! Change shadows, FPS, and anti-aliasing.
+ Performance improvements! Areas of your world will now load in chunks when in view, and unload when out of view. Slightly longer initial load time, but overall much better performance.
+ Improved controls! Another checkmark button has been added to the bottom right corner when building.
+ Improved UI! UI will be hidden when moving items, so you can have a better view of the world when building. Less clunky!
+ Bug fixes!