sequences.extras: adding remove-last.
sequences.extras: adding remove-last.

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