Prevented the Specter from despawning on Peaceful.

Changed the healing algorithm to make it more evil.

src/main/java/WayofTime/bloodmagic/entity/ai/EntityAIRetreatToHeal.java

@@ -154,6 +154,6 @@ public class EntityAIRetreatToHeal<T extends Entity> extends EntityAIBase
 
     public void healEntity()
     {
-        this.theEntity.absorbWillFromAuraToHeal(2);
+        this.theEntity.performEmergencyHeal(2);
     }
 }