New Symphony update (build 1030): drive letters, boss tweaks

Hello everyone!

We are working on more meaningful updates for the coming months, but have just put out a patch to address some of the more oft-mentioned issues:

-Support for up to 20 drive letters (up from only 8)
-Tweaked the behavior of the infamous 4th boss
...and a few other minor fixes.

Thanks again for all your feedback, we hope you enjoy Symphony!

Francois