v0.9.21 Return of the Old Controls, etc.

■Changes :

• Reintroduced the option for the previous control method.
  　 ➔
• Added the "Bamboo Slat Floor".
  *Please note it produces a sound when stepped on.
• Keys for “Byakko”, “Kokko”, “Shakko”, “Namanari”, and “Yamanba” have been added.
  
• Other minor changes were made.

■Bug Fixes :

• Other minor glitches were fixed.