Next versions

• Modify Creeper's fuse ticks and its jump height.
• Add a filter based on entity's location: location in the world, under sun
• Restrict entities' despawn (setRemoveWhenFarAway). Investigate a possibility to move such specific entities and limit their number.
• Implement specific properties of LivingEntities: powered creeper; horse's jump strength, domestication, style, variant, armor and saddle; saddled pig; angry bunny; baby zombie.
• Unique flag: don't apply two handlers with the same value of this flag. This flag should replace filter's probability with a system of weights.