fix(lineWidth) center timeline when having different line width#7

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lidio601 wants to merge 3 commits intoJohan-dutoit:masterfrom

lidio601:fix/center-line

Commits on Feb 4, 2019

fix(lineWidth) center timeline when having different line width
lidio601
committed
fix(circle) move circle up to center it between the two segments
lidio601
committed

Commits on May 7, 2019

chore(center) added centerLineAndCircle to allow backward compatibility
lidio601
committed