- Update to version 0.8.4
* Fix full screen mode for SDL 2 where the active area of mouse
was different in comparison with the screen.
* Increase game performance on low-profile devices
* Improve keyboard usage: support of Delete button for editing,
Shift and Ctrl buttons for unit stack management, Numpad Enter
behaves like the original
* Fix scrollbars behavior, object interaction on world map, UI
* dialog elements and scenario selection logic
* Over 100 bugs fixed since 0.8.3 release