v2.1.0 - LongOpts; Accepts case-insensitive long options; Better options and arguments parsing; Detecting permission errors; Option -n, --no-overwrite to abort if output PDF file file exists; Rebuilt Flip-Detection; 'source' paper type wildcard to run resizing without resizing anything; Auto-modes no long default on invalid mode selection; Rebuilt help info; Many new auxiliary functions; Few new execution flags; Rebuilt some error messages; More error detection; Able to read stupid pdf extensions like .Pdf; Removes stupid pDf extensions on automatic naming; Better Verbosing messages; And many other changes