Mob Battle 2.6.0

• Internal Refactoring
• Add mob highlight to items to show selected mobs better
• Allow entities in a mobbattle to damage wither and enderdragon always (vanilla is unchanged!)
• Update multipart entity selection
• Fix Multi item not working

For past versions see: https://github.com/Flemmli97/MobBattle/blob/1.21.5/Changelog.md