Major changes in 2.12.1 are: * Pass all selected files to menu extensions, not only one per mimetype * Use much fewer file monitors * Fix text size on startup with non-standard default zoom size * Some fixes to trash handling and unmount * Fix some desktop icon positioning details * Copy thumbnails when copying files * Autofill connect to server dialog when possible * Always show deep counts in properties page * Fix leaks and crashes * Correctly escape filenames for display in progress dialog