It seems that with the latest winit, quit_event_loop() might take a little longer and the timer fires once more. We don't really care how long quit_event_loop() takes in this test, merely that the timer firest and that we can terminate the loop.
Fixes#5484
Updated the version from 1.1 to 1.2
Renamed the header to "Slint Royalty-free Desktop, Mobile, and Web Applications License"
Added definition of "Mobile Application" and grant of right
Moved "Limitations" to 3rd section and "License Conditions - Attributions" to 2nd section
Added flexibility to choose between showing "MadeWithSlint" as a dialog/splash screen or on a public webpage
Moved the para on copyright notices to section under "Limitations"