CC: Tweaked 1.111 for 1.20.1 and 1.20.6

[SquidDev]

This is a bit of small release, but there's been a couple of changes that I felt were worth mentioning.

Reorganised turtle textures

For a long time, turtles have used a single large texture for their sprite, unlike other blocks which use a separate texture for each "side" of the block. This means we end up wasting a lot of space on the sprite sheet (example).

In this release, we've now split up the turtle sprite into individual textures. This will break existing resource packs (sorry!). There is a script to convert resource packs to the new format, though currently it'll only work on textures at the default resolution.

Optifine warning

Optifine is one of the longest surviving mods, and for good reason — it provides a significant performance boost for some players, along with a lot of nifty features. Unfortunately, it also causes a lot of problems in a modded environment.

Optifine is especially broken on Minecraft 1.20.1, which prevents peripherals and wired networks from working (#1458). This can be very confusing to debug, so we now print a message to chat when Optifine is installed:

I'm a little wary about doing this (mod incompatibilities is always a great source of drama), but until the bug in Optifine is fixed, I think this is the best option.