Benji Bon's Elo plugin

(Spigot, Bukkit, and Paper)

What is Elo?

• Elo is a system designed to try and accurately rate skill, so basically a score that says how good you are at pvp. This is a plugin gives you elo similar to chess.com. Defeat other players to gain more elo, die to other players and you lose elo.
  
  
• If you die to someone who has a much higher elo than you, that was expected, so it doesn't change your elo that much.
  
  
• However, if you die to someone who has a much lower elo than you, that was not expected of someone your skill level, so it brings down your elo more.
  
  
• This goes the same with beating someone with a higher/lower elo than you

Why this plugin? I think this plugin could spice up servers. Having a number that conveys skill to show as a status symbol might keep players interested.

also...

• If there are any bugs, please let me know.
• What should I add? I'd like to know that too!
• I have only tested this on 1.21.1, but it'll most likely work on 1.21.0
• If anyone wants it in different versions I can see if I can do that.
• Command usage in the Documentation Tab

what it looks like:

note: version 1.0 only supports 1.21.1, and does not have leaderboards, so i would just do version 1.2

note 2: when running in older versions like 1.18-1.19, it'll say there's a fatal error, but the plugin works perfectly, so I'm not sure what that's about.