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"
This change makes the test pass without the unicode feature.
Note that it is not possible to run the test without the unicode feature
unless one changes the Cargo.toml, so I did that locally to run the
tests
This is needed in the future to be able to roll back state within the
line breaking when we can't fit even a single word into the line and
have to go back to fitting glyph by glyph.
For the unicode line break iterator the clone is a little more complicated.
The iterator is clone, but the type is anonymous. I first had an
implementation to moved the iterator into a closure, which was cloned
via another control closure. But that's complicated and still involves
allocating the various bits & pieces the closure captures.
So instead the simpler solution used here is to allocate the breaks
into a shared vector.
