Password hashing updated

I improved the security of the password hashing system. As a side-effect all my old character-accounts are now invalid, so I had to delete them from the database. I could have done it in a backward-compatible way and retain the characters, but why bother when I don't have a production server yet.

Some new tiles and height levels

I created some new tiles. The rocks look OK, but the bushes need more work.

I also experimented with adding height levels. Those you see on this screenshot are entirely client-sided and randomly generated. I am unsure if I will keep it.

First, I am not sure if it is even going to add so much gameplay-wise for the amount of work it would mean (routefinding etc.). Then there is the problem that Tiled can't do isometric maps with height levels. So I would either have to patch Tiled, find another editor or write my own map editor after all.