Patch 1.0.3

Another tiny patch to fix some issues that have been brought up:

• added cursor clip option, set to "fullscreen only" by default. Also has always on/off options. This restricts your cursor to the window, so you can't accidentally unfocus your window by clicking on a second monitor.
  
• possibly fixed a crash on startup caused by the settings file.
  
• added a message for connections timing out, to make it more clear.
  
• reduced the impact of some instant-disconnect bugs. Currently working on a more thorough fix for the next patch.