Bukkit

- The order in which items are inserted in the anvil does not matter anymore. Chestplate + Elytra will work just a fine as Elytra + Chestplate.
- Support for enchanted books! You can now enchant armored elytras using enchanted books (but only for allowed enchantments (config)!).
- You can now use %ARMOR_TIER% in the config file for customised strings to use the armor tier in the messages.
- Made the command to give elytras to other players accessible in the game + updated command description to properly show how to use it.
- Plugin now checks if there are any updates for itself unless this is disabled in the config file.