Anti-Cheat compatibility

Changelog.txt

@@ -8,6 +8,7 @@ Key:
   - Removal
 
 Version 2.1.2
+    (Compatibility) mcMMO now deals custom damage type for all damage sources to be more compatible with other plugins (such as anti-cheat)
     (Perks) Fixed a bug where the Lucky perk wasn't adding to success
     (Skills) mcMMO will now listen to cancelled events to remove our temporary enchantments from tools
     (Skills) Fixing a bug where Shake didn't calculate success correctly

src/main/java/com/gmail/nossr50/util/skills/CombatUtils.java

@@ -344,7 +344,7 @@ public final class CombatUtils {
      */
     @Deprecated
     public static void dealDamage(LivingEntity target, double damage, LivingEntity attacker) {
-        dealDamage(target, damage, DamageCause.ENTITY_ATTACK, attacker);
+        dealDamage(target, damage, DamageCause.CUSTOM, attacker);
     }
 
     /**