ZenXArch's Skyblock

Changes

• All extra features are now disabled by default
• Use gamerules to enable extra features
• Added pigs spawning on mud (disabled by default)
• Added sand crushing (falling dripstone on stone) (disabled by default)
• Magma block to netherrack/lava is more consistent
• Lava drips first then converts to netherrack
• Added tzemmiecat's hardest skyblock as optional datapack