Update Squirrel to the latest version (0.5.0)
Install and remove shortcuts when installing
Provide a way to override the update URL from the command line in debug.
Clean up UpdateManager and fix small update errors
Rename Setup.exe to GoToWindow.Setup.version.exe
Close the "first run" window when Alt+Tab+Tab is pressed
Better handle when multiple instances are running at the same time (e.g. when updating)