Highlights

• Fixed crash on EssentialsX 2.21.x+ — NoSuchMethodError: I18n.tl when running /kitpreview <kit>.
  
• Ported from Paper to Spigot — runs on plain Spigot/Bukkit servers, no Paper required.
  
• Added bStats metrics — see plugin adoption at bstats.org.
  
• Verified full support range: Minecraft 1.16 → 1.21.11.
  

Bug Fixes

• Kit preview crash on modern EssentialsX
  EssentialsX removed the static com.earth2me.essentials.I18n.tl(String, Object[]) method in recent versions, causing /kitpreview <kit> to throw Unhandled
  exception / NoSuchMethodError when a kit had a parse problem.
  Dropped the broken localization call and replaced it with a clean warning log — no more command crash.
  

Platform & Compatibility

• Spigot native: dependency switched from paper-api to spigot-api. No Paper / Adventure / Kyori code remains.
  
• MC range: supports 1.16 – 1.21.11 (api-version: 1.16).
  
• Java target: Java 17.
  
• EssentialsX: compiles against EssentialsX 2.21.2, runtime compatible with older releases too.
  

New

• bStats integration — anonymous, opt-out via plugins/bStats/config.yml.
  
• Semantic Versioning adopted going forward (MAJOR.MINOR.PATCH).
  

Installation

1. Stop the server.
   
2. Replace the old KitsPreview.jar in plugins/ with the new KitsPreview-3.1.0.jar.
   
3. Start the server. No config migration needed.
   

Fixed an issue with sign preview not working.