This version adds a new method in SevenSegmentFun to display a more precise scale print9LevelVertical()
The levels are triggered over ( 0, 12.5, 25, 37.5, 50, 62.5, 75, 87.5 100) with 2 levels x digit, 8 levels on a 4 segment display excluding 0 level
Original Library: https://github.com/bremme/arduino-tm1637