Sukritact's Sumer Rework

My biggest issue with "Sumeria" is that they've never felt like the "Cradle of Civilization". Where are the farms? Where are the booming Ancient Era cities? Instead, the civ has always been an extension of Gilgamesh, with Ziggurats thrown in for good measure. This aims to fix that, as well as a few other things. It renames the civ to the more correct "Sumer". It nerfs the War-Cart some what so the early game War-Cart rush isn't quite as devastating. It keeps the Ziggurat a vital part of the Sumerian economy while limiting Ziggurat spam. Overall, the changes should make Sumeria a more interesting civ to play as. Sumer: Unique Ability: Cuneiform - Newly founded cities begin with +1 Population. Farms adjacent to a River yield +1 Science when next to the City Center, or +1 Faith when next to a Ziggurat. Unique Unit: Giš-Gigir - Sumerian unique Ancient era unit that replaces the Heavy Chariot. Available from the start of the game and cheaper to train. 4 Movement when starting in open terrain. Unique Improvement: Ziggurat - Unlocks the Builder ability to construct a Ziggurat, unique to Sumer.+1 Science. +1 Science for every 2 adjacent farms. +1 Faith for each adjacent District. Provides +1 Amenity if adjacent to the City Center. Cannot be built on Hills but may be built on Floodplains. Cannot be placed adjacent to another Ziggurat. -------------------------------------------------------------- Gilgamesh: Leader Ability: Epic of Gilgamesh - When you capture a Barbarian Outpost, receive a Tribal Village reward in addition to the usual Gold. May purchase War-Carts, Battering Rams, Siege Towers, and Melee units with Faith. Many thanks to the devs at Firaxis for making Sumer in the first place!