Performance

Added dialogue history, dialogue display options for vr (font size and dialogue box position), performance improvements for flatscreen.

Also reworked the animation system since the way unity handles it by default makes it a mess as the number of animations increases. This is an internal change so game wise it should all be the same as usual. 

Since Christmas is coming up I figured that, instead of making a few smaller updates, I'd make one big update with lots of new content. I also plan to make some extensive changes to gameplay and I need the time to work it out. I hope you'll enjoy it.