Bukkit

CHANGES:
- Moved Menu configuration to menu.yml, matching shops.yml format.
- Added Menu Pagination Support.
- Added New Menu Categories & Shops.
- Added auto resizing Menu Inventory Rows.
- Added better Menu Page Titles.
- Added cleaner debug messages without debug mode active.
- Added Cache yml that can be used for many things in the future.
- Added Player Head Skin Support using UUID (Even if specified UUID has never joined the server!).
- Added Player Head Caching.
- Added Custom Model Data Support.
- Added Dictionary to GUIShop Folder. Contains (Mob Names, Material Names, Potion Names, Enchantment Names).
- Added ItemFlag Support.
- Added Custom NBT Support.
- Added Disable Quantity Per Item.
- Added Firework Support (via CustomNBT)
- Added Pre-Filled Chest Support (via CustomNBT)
- Added Better Shop Warmup Logic. Shops now load substantially faster.
- Added Player-Head Cache that Loads into Memory on Boot.
- Added Visual Error Item's to shop/menu when something is wrong.
- Added In-Game Error message if clicked shop is missing.
- Added AOOB Check for Items in Shop & Menu.
- Added additional resolving checks & messages.
- Added Invalid NBT Checks for older server versions.
- Added Quantity menu won't appear if disable-qty enabled on item.
- Added config option to enable/disable escape-to-back mode individually.
- Added config option to enable/disable physical back-button mode individually.
- Added Potion Support (1.8-1.16.5).
- Custom NBT, Menu Items Support for Creator Mode.

FIXED:
- Legacy Item Material Resolution.
- Item Shop Name Applying to Purchased Items.
- Error when clicking slot a pagination arrow was previously located.
- Shop Dummy Items Ignore Clicks.
- Potions not reflecting their attributes on purchase.
- Enchanted Book Support.
- Shop Dummy Item Custom Names.
- Escape Back Not working when Dummy/Page Button pressed.
- Massive Item-Framework Rewrite.
- Massive Editor Rewrite.
- Disabled Worlds not working.

NEW CONFIG KEYS:
skull-uuid : Sets the UUID of a Skull.
custom-model : Sets ItemStack's Custom Model Data ID.
target_shop : Sets Menu Item's Target Shop to Open.
potion-info:
- type: Type of Potion.
- splash: true/false if splash.
- extended: True/False if extended.
- amplifier: Integer potion amplifier.
item-flags: String list of Item Flags.
disable-qty: True/False if item has quantity selector.

TODO:
- Item Modifier Support
- Money Formatting