Added user settings:

• Falling box: Toggle the falling boxes when you type.
• Falling box color: Change the background color.
• Falling box text color: Change the character color of the falling box.
• Sun: Change the intensity/energy of the sun/light.
• Text editor font size: Change the text editor font size, using the increase/decrease font size button/keybind will not be saved in the user settings file unless the settings menu is reopened and closed.
• Typing sounds: Toggle the five random typing sounds.

User settings location is at %appdata%\Godot\app_userdata\Falling Writer

Bugfix:

• Falling box shadows are displayed over pop-ups.
• Removed "v1.0.0" from the window title.