[1] You can't stand inside a safezone and hit players outside it anymore. It used to only check where the victim was, not the attacker.
[2] Golden and notch apple cooldowns work now. The bypass permission was set to OP by default, so admins never saw a cooldown and figured it was broken. It's off by default now, so give it to staff manually if you want them exempt.
[3] Safezone barrier blocks don't get stuck on your screen after a fight ends anymore.
[4] Killstreak messages like your streak counter and "streak ended" weren't showing right. They were reading from an old language file that never updated. Fixed now.
[5] Console doesn't get spammed with a debug line every time something hits a mob. That only logs for real player fights now, and only when debug is on.
[6] Combat log NPC now works. Log out in the middle of a fight and it leaves a killable copy of you with your gear, instead of just killing you on the spot. It's off by default.
[7] Essentials can't take over /pvp and /combat anymore.
[8] You can hide the extra command names and keep just /combat if you want it cleaner.
[9] Flight bypass and the apple bypass are separate permissions now. Your config updates itself on the first start and keeps anything you changed.
[10] Works on Paper 1.21.11, 26.1.x, Folia and Spigot.