Add an is_empty() method for TreiberStack
Add an is_empty() method for TreiberStack

crossbeam-rs/crossbeam,schets/crossbeam,crossbeam-rs/crossbeam,aturon/crossbeam,Ticki/crossbeam,msullivan/crossbeam,ticki/baguette,crossbeam-rs/crossbeam,crossbeam-rs/crossbeam