PA1 - PA3. DONE.

So it's probably a little premature to actually call it a wrap, but I've just finished quaternions (all my tests pass at least. I won't be sure they work right till I use them) and as I posted a few minutes ago the archiver and the converter are basically finished. I might do a little tweaking here and there but I think that means it's on to animation. (but first a video game break!) Feels good to be done.