Added Wordoku, which makes use of a pre-generated list of layouts. (From a self coded generator, created using BlitzMax)

2048 layouts are in the file, and on top of that you've got a random selection and then a random selection of missing tiles, so I think (!?) it should be plenty random for days/weeks/months to come.

But I'm also starting to get a little worried about whether the random number generator is doing a good enough job.
I might have to peek into that, to be sure, but it'll completely break "Yesterday's Solutions" for ... well, everything!!