Changes from 0.2
* Merged into the source the patch proposed by Johnathan Burchill (jkerrb), for an improved UI layout
* Some cleanings and minor bug fixes

Changes from 0.1 (by Moris Ravasio <moris_ravsio@hotmail.com>):
* Support for version 0.6 of libinklevel
* Autodetection of printers
* Improved error messages verbosity
