Look into using fixed-point numbers for probabilities about alliescalc HOT 1 OPEN

After some quick and dirty tests, using fixed point probabilities does increase performance by ~20% (though this could be due to causing more aggressive pruning than actual speed improvements). However, it's still using the f64 binomial distribution from statrs, so we don't really gain any precision in calculations. We'll need a higher precision binomial pmf, possibly by rewriting the binomial pdf with high-precision fixed point.

Most tests also fail due to the precision problems. However, sub_plane_destroyer goes on indefinitely - I believe this is caused by probability of the generated rounds never quite reaching the prune threshold of zero. We can take a closer look into this once the binomial precision issue is resolved.

from alliescalc.