use std::hardware_destructive_inference_size (#49)

use std::hardware_destructive_inference_size

expand tests (#48)

Merge branch 'main' into tests

simplify MPSC and expand SPSC tests

add benchmark comparing against rigtorp SPC (#47)

add benchmark comparing against Rigtorp SPSC

improve bench formatting (#46)

improve bench formatting

cleaup unsafe empty (#45)

cleaup unsafe empty

improve MPSC performance (#44)

improve MPSC performance

simplify MPSC to use WaitStrategy (#43)

cleanup

improve bench to show cost per op (#42)

improve bench to get more detailed cross core statistics

improve bench to get more detailed cross core statistics

improve bench to get more detailed cross core statistics

use less cache lines and reduce cache coherence penalty (#41)

fix error