Economy Update

Added economy system. You get budget every month, and more every other month the more agricultural development and industrial development you get. Your authority and popular support decrease by 1 every four months. You can spend your budget on increasing agricultural or industrial development, the military, welfare, repression, and bribery. These increase certain variables and they must be managed to avoid bad events that potentially end your game. The ending slides have been somewhat rewritten and some bugs have been found and removed. The ending slides have been made to work with the new system. Make sure to join the discord to report any bugs that may have snuck in, or balancing that was bad.