Anderson Luiz Silvério

CUPS filter not working

1

The provided CUPS filter is not working properly. The `grf = GRF.from_pdf(pdf.read(), 'CUPS')` on [line 22](https://github.com/kylemacfarlane/zplgrf/blob/403ed11d2c798607602d80cb9d03601ed0b7e805/pdftozpl#L22C5-L22C43) returns a list, so the `grf.optimise_barcodes()` and `grf.to_zpl` calls doesn't work. What i did...