Many instructive lessons on important strategic themes to become a professional
* Invert board option is replaced by on-board gesture
* Added "Auto next" option - automatically switch to the next exercise
* Added UCI engine support
* Added ability to navigate through lesson using swipe gestures on notation
* Added chess symbols convention
* Added "Copy PGN" option
* Added "Clear statistics" option
* Improved current theme and subtheme storing
* Improved test mode
* Various fixes and improvements
- ACCESS_NETWORK_STATE: Allows applications to access information about networks.
- INTERNET: Allows applications to open network sockets.
- WAKE_LOCK: Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.