Update v1.0.6 Released

Small improvements related to the window & fullscreen:

• Improved the internal process related to the fullscreen mode.
• Auto-set the default screen size (e.g. 1920x1080) depending on the aspect ratio of your display.
• Auto-adjust the window size (especially if the display resolution is not enough).
• Auto-adjust the window position if the window goes off the screen.
• Enable to toggle fullscreen mode with ALT + Enter (on Windows) or Command + Control + F (on Mac OS).
• Enable to toggle the window size (1x / 0.5x) with F4 key.
• Enable to toggle the rendering scale (1x / 0.5x) with F5 key.