Version 0.12.10-10 now uploaded. This adds an option to start in fullscreen mode, an extra view mode for the library (by name - without any hierarchy), and forces the fullscreen overlay button on in the Library view (making it easy to toggle back from fullscreen). There's also a few cleanups to the popup dialog code (added busy spinner) and the fullscreen code.

With adding the fullscreen startup option, I've added a new Startup tab to the preferences, and moved the option to start in the library view there as well (this may cause fbreader to forget the previous setting though, so check this if you're using this option).

The source code changes are available from here.