Remove dependencies that weren't available in Mac OS
Fix up the README with the steps that worked for me to run scripts
Fix bug where xdo_psro_fixed_population_comparison was effectively ignoring num_strats: get_psro_meta_Nash was always only using 2 BR policies per player (and was erroring if len(br_list) == 1).
xdo_psro_fixed_population_comparison
was effectively ignoringnum_strats
:get_psro_meta_Nash
was always only using 2 BR policies per player (and was erroring iflen(br_list) == 1
).