Version 1.4
Version 1.4 is out
Made the code even more compact (from 1217 lines of code to 1198 lines of code), mostly by using CTFE to initialize some static arrays.
Added eval pruning (+25 elo), razoring (+25 elo) and killer moves (+50 elo) to improve the level by about 100 elo (in self play), hoping more than 50 elo in rating lists.