Nova v0.2.2

SS/STV模擬器 Nova 發布新版，更新如下 :

VDP2: Fixed a bug of MSB transparent shadow(Game no Tatsujin).
CONTROLLER: Implemented
 Analog Joystick(No analog data for now)
 Keyboard(Game Basic for Sega Saturn)
 Shuttle Mouse(Game no Tatsujin)
 Mega Drive 6-Button Pad(for testing)
 Mega Drive 3-Button Pad(for testing)

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