Updated [ver2.1.0]

* Updates in this version:
・Added a guide character named Fumi
・Made some changes to the screen layout
・Added chat functionality
・Added Standby mode - play in single player mode while
waiting for an opponent
・Added multiplayer rankings

* Several bug fixes:
・Especially related to multiplayer games.

We're still working on some bug fixes and we appreciate your feedback again
if you notice something that doesn't seem right.

Thank you.