Another Smooth Difficulty Mod

Removes all initial units and tech boosts to the AI, but gives an stacking 2% bonus to production and gold and a stacking 1% to science, culture, faith and food for each era past Ancient. Also adds a 5% initial food bonus per difficulty above prince. Some changes made by JNR were incorporated in the mod as well, as giving a free ranged unit with every city founded and a free builder for each district (to help the AI to improve its land a bit more.) Also gives low difficulty players the same bonuses that the AI would gain on the Ancient Era (i.e., no stacking bonuses) in a game from the corresponding high difficulty: - Warlord gains King bonuses, Chieftain gains Emperor bonuses; and Settler gains Immortal bonuses. This mod was made analyzing, tweaking and merging many other mods with a similar idea, namely the ones by RushSecond, schwarzpol, Kaige Lindberg. As mentioned before, many of the most complex changes were made by JNR and incorporated.