rosetta-code.metronome: fix metronome to stop the timer.
rosetta-code.metronome: fix metronome to stop the timer.

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