Method setTabSize

libraries/ParallelPrinter/ParallelPrinter.h:44–44

n = 2,4,6,8

  //       n = 2,4,6,8
  void     setTabSize(uint8_t n)   { _tabSize = n; };
  uint8_t  getTabSize()            { return _tabSize; };
  //       n = 1,2,3
  void     setLineFeed(uint8_t n)  { _lineFeed = constrain(n, 1, 3); };