0.6 Update: Tiles!

The first update!

Skipping over the list of "Coming Soon" features entirely, the first update is a graphical one.

The tiles used for the environment were clearly simple, and I think they were okay for a first attempt, but now that the game has been released I thought that I could do better.  I like the new ones quite a bit more and I hope you all agree.

For the curious among you,  I made the new tileset using Pyxel Edit and Tilesetter.