Changes/additions to the Multiplex pre-order drive…

I've decided to make some changes to the Multiplex pre-order drive. You can read the new deal on the Multiplex sales page, but the gist of it is this: instead of 250 pre-orders, the goal is $5000 (a whopping $12.50 higher in dollar terms, based on the regular edition of the book). However, all purchases from the Multiplex store count towards the goal now — so we're significantly closer to the goal than we were before. I think this is a fair change for everyone.

Like before: if (and only if...