If I put "3", it fails for "3.15", if I put "3.15.x" it works with "3.15.0", but fails for "3.16.x" ...
I also tried putting several versions in the string, like:
"3.15.0, 3.15.1, 3.15.2, 3.16.0"
But that doesn't work. And looking at the parser in 99.themes.php, I can understand why. So I'm just wondering what the correct way of doing this is?
