There are many ancient games in GoGoD, but they are not commented there.
I haven’t seen many books in English that would comment on old games and explain historical background. Appreciating Famous Games comes to mind, and Invincible. I’ve also seen a commentary on Dang Hu series somewhere.
If you know one of East Asian languages well enough to follow a game commentary, much more can be found in books and on the Net.
As for the evolution of the rules and strategy, it might be better to ask on L19 Forums, there should be people there who did some historical research.