Kill Upgrades

 Upgrade Mod

Weapons get stronger and unlock abilities as they rack up kills.

 How it works
- Kill players, mannequins, the Warden, the Ender Dragon or the Wither with a weapon to level it up (1, 5 and 10 kills).
- Levels are stored on the weapon, so if someone takes it, it stays level 10.
- Hover over a weapon to see its unlocked abilities.

 Weapons
Sword, Axe, Mace, Trident, Spear, Bow, Crossbow and Fishing Rod each have a 5-kill and a 10-kill ability.

Boss abilities
Kill a boss with a weapon to unlock one boss ability on it:
- Warden: Sonic Boom
- Wither: Blue Skull
- Ender Dragon: Dragon's Breath (only one weapon on the server can have it)

 Commands
Everyone: `/upgrade ability`, `/upgrade boss`, `/upgrade info`, `/upgrade popups true|false`.
Operators: `/upgrade kills set`, `/upgrade cooldown ...`, `/upgrade lock ...`, `/upgrade mace ...`, `/upgrade testmode`, `/upgrade boss give ...`, `/upgrade dragonlimit ...`.