dumb 1.3

[abulmo2]

Hello,

I made some further simplifications in Dumb's code, that resulted in a faster and slightly stronger chess engine.
You can dowload some binaries here: https://github.com/abulmo/Dumb/releases/tag/v1.3

N.B.: I used more generic compilation settings. The 64 bit versions should work on any 64-bit x86 CPU now.

Have fun with it.