1.0 release for 1.21.3!
There's a lot of incompatibilities here. Install with caution.

Please report any problems that you encounter!

Incompatibilities

I'd recommend viewing 1.21.3 for an explanation as to why there are more incompatibilites than usual. Do not try to reinstall anything listed here, unless a fix is provided.

• Simple Voice Chat
• FancyMenu
• Iris
• MapFrontiers

Explanations

Simple Voice Chat

Incompatible with Flashback.
This creates a conflict between that crashes the game. We had to choose between the two, and we chose Flashback.
If you prefer Simple Voice Chat over Flashback, simply reinstall the mod and remove Flashback.

Iris

Iris 8.1 is incompatible with Sodium 6.13, which makes the game crash.