A whole lot of tweaks to Unfolded, to make it all a little more stable. Just minor background things, nothing too notable, but enough to keep things working!!

I've also rewritten the way the Alternating Maze is generated, and it now ends up taking about s full second to generate each puzzle. Eeek! Still, with the recent puzzle-cache functionality, that should be a little bit easier on the server.

The Alternating Maze mazes should now be a little more difficult to solve, with the paths hopefully being better than just a single straight line going down the page!