via http://emu-russia.net/en/

Nintendo GameBoy/GameBoy Color emulator for Android has been updated. Changes:
- ** Added custom layouts! go to settings > input settings > virtual keypad settings > d-pad + buttons **;
- fixed save log errors for 4.2+;
- fixed loading rom bug;
- fixed looping ad;
- Fixed rom select error;
- Fixed save error, make sure you save in quick save to instantly start in game where you last left off--or simply load the save state from the in game menu > load;
- Fixed cheats error;
- Fixed various crashes;
- User experience upgrades;
- Fixed repeated ad errors;
- Fixed in app purchase.
News source: https://play.google.com