A final Prince of Persia on MSX update

A long-overdue update on the project, especially since a release is planned soon! I won't go into too much detail about the bugs I've fixed and the Easter eggs I've crammed into the ROM. Instead, I'll simply show you some of the bigger features I'd like to highlight, and the things that make this version stand out from the other 8-bit versions of the game. I also got some great help along the way. Hans Cnossen and WYZ helped me get the PSG sound chip support added to the game, as well as providing some extra music for this version. Xavi and Ray2day also helped out as testers, playtesting the game and pointing out errors and things that needed fixing. A special thank you to Ramon for pushing for a physical release and for putting me in contact with the others. Without that push, the new intro music and PSG support probably wouldn't have happened. There are still plenty of things I dreamed of putting into the game, but at some point you have to stop improving and decide that it is more than good enough to be released. After all, people have been waiting for this for years now! I think this version is in a really good place as it is, and I'm happy to finally show you what I've been working on.