Updating to GM 2.3

I saw that some Windows 11 players have problems with the game (a black screen at start, you can overcome this with entering window mode with F4 though). And since I can't update the game anymore due to ceased support of GM 1.4 (which I used for developing Ringo) - I decided it to update the game to GM 2.3

I don't plan any major improvements, maybe some little fixes here and there (easy controls reset for example). But the new version will bring new bugs, please beware of it.

I'll make an announcement when the update is ready. I hope to deliver it in few weeks.

Thanks!