* slightly optimized candidate scrolling animation
* added missing Russian translations
* the soft keys fit properly on the screen
* central soft key is now always 'OK', because users do not care about the exact functions it performs in the code
* removed 'mode notify'; it wasn't working on Android 11 anyway
* removed 'space on 0' option; 0 is always 'space' now
* disallowed global key remapping and removed the app setting
* Multilingual backend support with initial Russian language support
* Updater service to update the database in the background, and overhauled
backend access
* Fixed long pressing numbers in Lang mode would not input digit
* Fixed Add Word not behaving as you would expect
* Some other minor fixes
