V4.3.5.3:
* Fix Download menu item in cloud
connection book details always greyed out on some devices
V4.3.5.2:
* Fix cloud connection book details not
showing all columns on Android 4.2.1 (at least)
V4.3.5.1:
* Fix support for FBReader able to open
azw3 books
* Fix crash caused by bogus metadata
stored in epubs