sequences.extras: adding supremum-by and infimum-by that call the "map" quot once per element.
sequences.extras: adding supremum-by and infimum-by that call the "map" quot once per element.

sarvex/factor-lang,tgunr/factor,factor/factor,slavapestov/factor,slavapestov/factor,mrjbq7/factor,bjourne/factor,nicolas-p/factor,mrjbq7/factor,mrjbq7/factor,mrjbq7/factor,dch/factor,bpollack/factor,bjourne/factor,nicolas-p/factor,nicolas-p/factor,dch/factor,tgunr/factor,slavapestov/factor,bjourne/factor,bpollack/factor,bpollack/factor,nicolas-p/factor,AlexIljin/factor,bjourne/factor,AlexIljin/factor,sarvex/factor-lang,bjourne/factor,tgunr/factor,slavapestov/factor,nicolas-p/factor,factor/factor,tgunr/factor,AlexIljin/factor,AlexIljin/factor,mrjbq7/factor,sarvex/factor-lang,slavapestov/factor,factor/factor,bjourne/factor,AlexIljin/factor,slavapestov/factor,dch/factor,slavapestov/factor,bpollack/factor,bpollack/factor,sarvex/factor-lang,sarvex/factor-lang,dch/factor,AlexIljin/factor,mrjbq7/factor,bpollack/factor,AlexIljin/factor,tgunr/factor,factor/factor,dch/factor,factor/factor,nicolas-p/factor,bpollack/factor,bjourne/factor,factor/factor,nicolas-p/factor,sarvex/factor-lang,tgunr/factor,sarvex/factor-lang,dch/factor