@mattswift @tomw I was about to comment the same thing, especially since it's typical for PHP devs to defend the most insane decisions it makes with all their might, but this time it's actually correct. These aren't decimal points, they're version part separators. 1.02.04 doesn't mean "version one and two-hundredths and four-idontevenknow", it means "version one, subversion two, subsubversion four", just stylised in a weird way, perhaps because the person making it wanted to reserve two spots per subversion to have the same width when going above 9.
It's like the day 04.02 just means "fourth day of the second month" (or the reverse if you're wrong) and not day four and two hundredths somehow.