Hey, it's been a year since v0.1. They grow up so fast...
At first glance, nothing seems out of the ordinary with the filesystem functions.
Ok. I'll make an updated release with the saving fix, plus a few minor fixes soon.
By the way, last week I was working on an overhaul, so that it's compilable for a computer with SDL again. It should also make it easier for porting to other systems, later on. It's a big thing, though, so I won't be using it for the update for now. Needs more fixes, testing etc. Will put it on github when I'm ready.