0.22:
- zbarcam-qt: allow changing resolutions in real time
- zbarcam-qt: better support ZBar options
- zbarcam-qt: do several visual improvements
- zbarcam-qt: make it remember the geometry
- zbarcam-qt: allow show/hide control and options bars
- zbarcam-qt: remember lastly used settings and camera controls
- zbarcam-qt: allow changing ZBar decode options via GUI
- Add API to allow get/set resolutions
- img_scanner: add handler for color-inverted codes
- img_scanner: fix get_config parameter validation
- scan_video: improve logic to remove duplicated/invalid devnodes
- symbol.c: fix symbol hash logic (prevents crash with QR options)
- configure.ac: fix an error at libv4l2 package check
- fix some typos
- exit gracefully when decoding split QR codes