[AD] 3D math routines removed from 5.x?

[Kai Yu <nie...@gm...>]

Hi,
I found Allegro yesterday and was deeply impressed by its elegance. And in
5.x, I'm even more pleased to see the APIs have been prefixed and better
organized. However, I wonder if I missed anything, but I can no longer find
the 3D math routines in 5.x releases. Have they been dropped completely?

Regards.