v1.0.08 update

- (Bug) Sound Test was accessible even when it wasn't purchased in the Shop. - (Bug) Upon leaving the Sound Test, the Title bgm was not restored. - (Bug) Scanlines caused the game to rescale incorrectly on displays with different resolutions. The screen size is now handled a little differently when calculating the final scanline output. - (Bug) Switching between fullscreen and windowed mode with scanlines active sometimes caused the screen to be resized incorrectly. - (Bug) Starting the game with scanlines active sometimes caused the screen to be resized incorrectly. - (Bug) The gallery numbering began with 0. It now begins with 1. - (Bug) The gallery's final image was not displaying.