mGBA 0.6.3

GB/GBC/GBA模擬器 mGBA 發布新版，更新如下 :

Bugfixes :

• GB Audio: Revert unsigned audio changes
• GB Video: Fix bad merge (fixes #1040)
• GBA Video: Fix OBJ blending regression (fixes #1037)

https://mgba.io/2018/04/14/mgba-0.6.3/