It was found that the Spigot API's methods for cancelling player collisions won't work without changing the scoreboard. Because of that, the normal option has been disabled. The invisibility option has also been removed, as that's a bad idea if players can still push each-other.
The toggle player option which is implemented in this commit does disable player collision, so that's the only working way right now.
A potential ConcurrentModificationException has been fixed.
The parkourCheckpoint command has been removed, as the functionality is now available through the API.
Adds some missing save arena method calls for parkourArena's edit methods.
Adds a message when a player reaches a new parkour checkpoint, and makes sure to avoid repeated messages.
Adds /dleave and /pleave as aliases to /minigamesleave
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.
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.
