- Update to version 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