Important change to .SB3 and .UBP

In the next update, we're making fundamental changes to how projects are serialized which necessitates permanent differentiation between our file format and the legacy ".sb3" format.

This is an improvement. Details below.

I'm going to be taking a break from Unsandboxed development for a few days because, as much as I've been enjoying going a million miles an hour, I need a rest lmao.

I think I'm going to change the name of the first "named" update though...

The next update to Unsandboxed will feature Spork stylisation.

It is with a heavy heart I must announce that I did not port the bugs introduced by the Spork update. Your projects will still work, tragically.

Let's play a game! Can YOU help Sandy find her drums? 🤔💭

Pretend that the sky is the limit: how would you want a dedicated tile system to work?

What game engines stick out to you as having a good tile system? What do you like about them?

I don't care about complexity, just tell me what you want.