Alright, UberItems has undergone a massive shift since the last update, and is as close as it has ever been to a working API for adding OP items to Minecraft. In the coming days, I plan to make javadocs for the API and update the plugin pages to properly reflect what exactly we have here, but in the meantime, here is the massive changelog:

• Add onBlockBreak handler
• Allow Uber Items to break blocks by default
• Add cooldown system
• Make it so you can’t place Uber Items as blocks
• Admin inventory menu that allows user to take any uber item
  
• Custom crafting table / recipe system
• New mechanism for getting UberItems in vanilla (breaking a crafting table with a lever to get the Uber Workbench)
• Crafting Guide System
• Fixed bug where you cannot move items in inventory slot 23
• Add crafting guide entries for UberMaterials
• Added shift clicking to crafting grid
• Fix bug with crafting UberMaterials not being responsive
• Added recipe to constructor for UberItems, standardized the process of making new ones in a separate class file
• Fixed bug allowing uber materials to be place-able
• Finished Functionality of Uber Materials system, can craft UberItems and UberMaterials with a mix of regular vanilla items and Uber Materials
• Added recoil to the Shooty Box, which varies depending on what is shot
• Added “spark dust”, a cheaper version of gunpowder
• Made it so UberMaterials can’t be crafted with (unless expressly allowed to)
• Made it so UberMaterials can’t be renamed
• Added spritz attack to shooty box
• Added flint functionality to shooty box
• Overhaul guide system to make a menu similar to /uber browse with a toggle for UberItems and UberMaterials, no next / previous buttons.
• Verified that the Shooty Box is video ready
• ShootyBox ammo guide menu
• Added stackability clause in UberMaterial creation process
• Added flammable substance, fools gold, paper fletching
• Replaced browse menu with being able to shift click uber items and materials out of the tutorial menu in creative mode.
• Replaced upgrade menu button with plugin info button in crafting menu
• Fixed OOP concepts plugin-wide
• Allowed levers to be used as UberItems (added check for if Uber before making Uber Workbench)
• Removed multiversion functions, needlessly complicated code without actually making the plugin multi-version
• Finished /uber command (remove unneeded dev stuff)
• Standardized spacing in ability descriptions for ease of adding new items
• Standardize usage of functions in Utilities, SortingUtilities
• Added upgrade system (drag and drop upgrade items onto item in inventory)
• Updated clickedInInventoryAction to be easier to understand from an API POV
• Added material: enchanted stone
• Standardized warn system to remove unneeded array.asList mentions
• Added more streamlined way to apply and remove UberItem upgrades
• Fixed most of the warnings in the project, Verify that plugin is ready as an API
• Fix console errors from UberItems that are / need unloaded items / materials
• Added boolean for using default UberItems
• Shortened tutorial menu name to fit item names
• Added feature for “/newline” phrase to force newline in stringToLore function
• Added perms: uber.item.ITEMNAME, uber.rarity.RARITY (all true by default)
• Added /uber giveMaterial command
• Added null UberMaterial for when mats / items aren’t loaded, prevents crash
• Added default UberMaterials config option
• Add 5 custom external UberItems limit on LITE (using addons)
• Moved “craftamount” to recipe object instead of as a property of ubermaterials
• Added descriptions to UberMaterials
• Flesh out current items w/ crafting recipes
• Updated addons plugin template
• Fixed creative mode shift clicking in tutorial menu to not give duplicates of non-stackable UberItems or UberMaterials
• Make UberItems work in the list like Materials do (make numerical IDs obsolete)
• Make spigotmc page for template UberItems addon plugin
• Require a boolean for each UberItem action as to indicate whether or not the action was successfully done (for use in one-time-use items)