Upgraded to mention upgrades!

I realized there was no explanation that stacking copies of the same item is a very important way to gain stats. (Tigey saw the tutorial I made for battles and refused to let me make one for his shop.)

I also switched some names and sprites to avoid some repetition and fixed the portal scene half-appearing once the story sequences are completed.

... and then I didn't realize this devlog thing needs to be set to public for anyone to see it, until eleven hours later...