Optimize FlowPathRecentStep to only prune segments added to since last prune
Optimize FlowPathRecentStep to only prune segments added to since last prune

tsotetsi/textily-web,tsotetsi/textily-web,pulilab/rapidpro,pulilab/rapidpro,tsotetsi/textily-web,tsotetsi/textily-web,tsotetsi/textily-web,pulilab/rapidpro,pulilab/rapidpro,pulilab/rapidpro