Improve MOTD simplifies

[PerchunPak]

They handle now 3 more scenarios:

• Meaningless resets and colors (&a1&a2 -> &a12)
• Nearby strings (["123", "456"] -> ["123456"])
• Spaces between duplicated formattings/colors (&a &a1 -> &a 1)

I also added a test which ensures that we don't remove strings that are only spaces (because I had such an idea in TODO, but then realized that spaces can be used as delimiters).

Example

Unedited MOTD from our Discord chat:

§r                  §r§l§r§l§aS§r§l§aE§r§l§aR§r§l§aV§r§l§aE§r§l§aR§r §r§f| §r§7[1.19-19.2]§r
§r  §r§aW§r§ae§r§al§r§ac§r§ao§r§am§r§ae§r §r§at§r§ao§r §r§at§r§ah§r§ae§r §r§am§r§ao§r§as§r§at§r §r§af§r§au§r§an§r §r§aa§r§an§r§ad§r §r§ad§r§ae§r§ad§r§ai§r§ac§r§aa§r§at§r§ae§r§ad§r §r§ac§r§ao§r§am§r§am§r§au§r§an§r§ai§r§at§r§ey§r§e!§r

is now transformed into

                  §aSERVER §f| §7[1.19-19.2]
  §aWelcome to the most fun and dedicated communit§ey!

but before was

§r                  §aS§aE§aR§aV§aE§aR§r §f| §7[1.19-19.2]§r
§r  §aW§ae§al§ac§ao§am§ae§r §at§ao§r §at§ah§ae§r §am§ao§as§at§r §af§au§an§r §aa§an§ad§r §ad§ae§ad§ai§ac§aa§at§ae§ad§r §ac§ao§am§am§au§an§ai§at§ey§e!

---

P.S. It may be a breaking change, because now it gives much less number of elements, than it was before. But it should be expected, and no public API was changed.

[PerchunPak]

I think we accidentally created the most powerful Minecraft MOTD humanizer

[ItsDrike]

LGTM.

In a way yes, this is a breaking change, though I don't think we have to consider it as such, as I'd expect most people using simplify to only be using it for nice visual representation, rather than for storing the final result somewhere / testing against it / using it as some kind of key. Everyone should always use the actual motd as it was returned from the server for things like that.

However it might be a good idea to explain that these kinds of changes are permitted. We could add something like a version guarantees page in the docs, explaining what is and isn't considered a breaking change for us. As an example, this is the page I made for mcproto: https://mcproto.readthedocs.io/en/stable/pages/version_guarantees. But that's something for another PR.