v1.1.3 2010-06-19:
  - added minimal GUI
  - new "force extension" option (-f) to control which filters are applied
  - PDF filter: new parameter to disable launch actions with PDFiD
  - updated PDFiD to v0.0.11
  - fixed bug in PDFiD_PL (return cleaned for non-default keywords)

2011-02-08: updated documentation