[Computer-go] Scraping lower-ranked games from kgs

[Arthur Cater]

Thank you Josef for that script.

> 
> If you want to download more players, you need to search through opponents of players you know. But do not spam the kgs server too much please :-)
> 

Point taken, I would not want to spoil the kgs experience for users.
I think a few hundred a day would be easily handled, after all I’ve heard it said
that approx 25k games a day are played on it. Clearly if I tried to download
all games from say 2010 onward in one go that would be horrendous and
most uncivilised of me.

Arthur