For anyone that was playing around with simulations or games in gloss-web: heads-up, you'll now have to change your programs. Sorry!

Previously, the type of "initial" was your own chosen world type. Now, initial is a function:

initial :: StdGen -> World

StdGen is from System.Random, and it's a pseudorandom number generator. A nice thing to have around for a lot of games! But I'd left it out before, so you will have to change your simulations and games to add it.

The easiest way is this: if you'd previously written

initial = ...

just change it to

initial _ = ...

That _ says there's a parameter there, but you want to ignore it.
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