Should cope with 'unpaper' without '-version' support.
As this happens only for very old versions of unpaper, this shouldn't be a problem...
spacing and line break problems
Does this still happen with the latest version of pdfsandwich?
No text visible when selecting text in Evince
Error when installing pdfsandwich through software centre
Should cope with 'tesseract' without '--list-langs' support
fixed in version 0.1.4