v0.2:
 * Improved search : whoosh.FuzzyTerm is now used
 * Label look has been improved
 * Menubar has been removed and replaced by an application menu
 * Label prediction : when a new document is scanned, predicted labels are
   automatically set on it
 * Pages are not displayed separately anymore
 * New settings: scan source, number of orientations to try, OCR can be
   disabled
 * Scans are displayed in real time

Signed-off-by: Jerome Flesch <jflesch@gmail.com>