Changelog:

• Toggling gravity in the world manager GUI now saves after restart
• Space guide back button functions better by returning to previous item
• "Astronauts" icon in the /space GUI now has CustomModelData
• Radioactive arrows added (Only effects players)
• Sword editor's thrust option and unbreaking option now has CustomModelData
• You can no longer repair lightsabers with an anvil
• Option to disable flight in space worlds added
• Hazmat armor implemented to prevent all forms of radiation damage
• Nuclear reactor added to provide huge amounts of power at the cost of uranium dust and coolant cells
• Uranium dust and coolant cell items added
• Coal generators and nuclear reactors can now drain their relevant fuel from adjacent chests
• Multiple console errors fixed
• Rockets are now airtight, so sitting inside them without a space suit is possible

All changes will soon be documented on the wiki. Enjoy!