Babylon nerf

It annoys me that the world era moves too fast and that the barbarians are way advanced when Babylon is in the game. This mod tones them down. Features: 1. Babylon's Eureka only gives 89% of the technology's cost. Instead of automatically unlocking a technology, they still have to reasearch it. 2. Bug fix. Sabum Kibittum also works against Ranged Cavalry. - They're supposed to behave like Anti-Cavalry but why are Ranged Cavalry exempted? Poking a Horse Archer with a spear is just as effective as poking a Horseman.