kfxs

``` const vf = new Vex.Flow.Factory({renderer: {elementId: 'output', width: 160, height: 160}}); vf.context.scale(0.75, 0.75); const score = vf.EasyScore(); const system = vf.System(); const myChord = '(B4 B#4)/w'; system.addStave({ voices: [score.voice(score.notes(myChord))]...