devlog #4

i think this is a big improvement
i added

    live_loop :printer do
      tick
      i=1
      while i < 5
        print "#{look+1}:#{i}"
        i += 1
        sleep 1
      end
    end

though it didnt contain any advanced functions, it did help a lot when i was trying to figure out why the two loops ended at different times
track-04 is much better than track-03

when using A-Bm-C#m-D-E-F#m-G#dim-A, it sounds peaceful and … neat?
i also added #5, #13, #21… to match `print “#{look+1}:#{i}”

`track-04 is much better than track-03, indeed
and the ui of displaying website has been upgraded