set showTextInterpretation + added constructor to modify
showTextInterpretation
implementation for BarCode 128
checkDigit and barCodeHeight were in wrong order/position
Implementation for GraficBox. used for lines and boxes
Font and rotation are not separated with a comma.
Format ^Afo,h,w (Zebra/zpl documentation page 49)
add tests for barcode 128 and grafic box
Merge pull request #1 from MatthiasVets/code128AndGraficBox

Add Code128 and grafic box + small fixes