SG Mob Spawn

A mod that adds mob spawns for higher difficulty like illusioners, zombie horses, cave spiders, etc. When spawn in high difficulty:

• Blazes have a 70% chance to spawn a Breeze if the biome is warped forest
• Spiders bellow Y 0 have a 85% to spawn a Cave spider
• Bats bellow Y 0 have a 50% chance to spawn a Silverfish
• Evokers have a 80% chance to spawn a Illusioner
• Zombies have a 5% chance to spawn riding a Zombie horse (when thundering)