- Automatic Focus on "new book"
- segfault when a not valid author is set
- segfault when no visible column
- BEWARE of newline in title/author/...
- Multiple language support :
	- Diacritics not accepted in window title?
- Semantic lens: not yet clean
- When entering a new book, display automaticaly the
  menu for collection and author
- Allow to change the filter while entering a new book



