Removes deaths and time as separate game-modes, and instead always tracks records.
Adds two proper game-modes. One inverts the player's controls, and the other randomly inverts the player's controls every 7 seconds.
Saves cleared status and records for each game-mode separately
Only allows 0-1 for the horizontal velocity
Requires arenas in arena groups to be cleared in sequence on all game-modes, not just the default one.
Finally gets rid of the redundancy when checking if a record has been beaten
Adds tab-completions for arenas and properties to the edit command
Adds an ArenaEditableProperty enum to keep track of editable arena properties
Makes the type of block players have to hit to win configurable
Separates the velocity option into vertical and horizontal velocities
Reduces some redundancy when getting an arena from an arena name
Partially implements the list command
Tries to improve the handling of players exiting in the middle of a session
Adds missing comments to ArenaStorageKey
Removes some finished TODOs
Registers all listeners
Registers all commands
Adds more descriptive TODO comments to each command
Removes unintended double storage of dropper arena sessions in DropperArenaHandler
Adds commands and permissions to plugin.yml
Uses the Spigot API instead of the Paper API
Reduces the Java version to 16, just in case.
Adds a lot of empty classes to show the intended plugin structure.
