Secret Society: Assassin Brotherhood

This mod provides a new secret society, Assassin Brotherhood. GS and Ethiopia Pack are required, and the new Secret Society only appears under GS ruleset. Please give me a thumb if you find this mod interesting! The idea comes from the game series "Assassin's Creed". Introduction Governor Promotions: Assassin Apprentice: Unlocked by discovering a Tribal Village. Grants an Assassin unit in your Capital. Reveals the Eden Piece resource on the map. Allows your Assassin to construct Eden Piece Suppress improvement. Allows you to construct the Assassin Branch building, a powerful replacement of the Monument. Hidden Blade: Unlocked in Medieval Era. Grants an Assassin unit in your Capital. Unlocks the Assassin unit (Production and Gold both work). Unlocks the "Shroud of Eden" unit (Production and Gold both work). Newly trained Spies gain the "Cat Burglar" promotion. Master Assassin: Unlocked in Industrial Era. Grants an Assassin unit in your Capital. Allows you to construct "the Eye" building. +1 Spy capacity. Your Spy level is increased by 1 for offensive operations. Spies gain "Informant" ability (provide Combat Strength for Assassins). Mentor: Unlocked in Atomic Era. Grants an Assassin unit in your Capital. +1 Spy capacity. Unlocks Starting global aurora borealis device, a city project that provides Science while active, and upon completion speeds up your Exoplanet Expedition by +1 Light Year per turn, but generates CO2 and increases the probability of natural disasters. Eden Piece: Unique bonus resource, +1 Faith, revealed by Iron Working. Available improvements include Farm, Mine and Eden Piece Suppress and so on. Eden Pieces (that are not improved) cause damage to units on the tile (-10 per turn， but not fatal). Eden Piece Suppress: Improvement unique to the Assassin Brotherhood，can only be built by Assassins. +2 Faith to adjacent tiles.+2 Food to adjacent tiles after researching Irrigation.+2 Gold to adjacent tiles after researching Currency.+2 Production to adjacen