v2.2.1

The following updates have been made
- The UI and layout of Solo Mode have been improved.
- The filter function for deck editing has been enhanced.
- Mate can be set for each deck.
- Multiple wallpapers can be set to the home screen.
- Able to follow the opponent player after a duel.
- The Shop UI has been improved.
- The Duel UI has been improved.
- Other bugs have been fixed.