bugfix WAV channel leak
fix : when not looping, don't call multiple onAnimEnd + currentFrame will be set to maxFrames.
fixed Sprite.getBounds when relativeTo has rotation
prevent getBounds() with a different scene (not supported) + fix some issues when getScene is null
fixed getBounds when not on scene (use new Sprite instead of top parent)
add docs
使用 dox 导出API
isSpace 0xa0
一些中文标注
标注
自定义调整 bitmapfont
中文注释