v3.1.0

Paper 26.3 is supported alongside 26.1 and 26.2.

• Paper 26.3. It needed no source change beyond the package name, and api-version stays at 26.1.
• A zombie reaches forward on 26.3 too. 26.3 moved its arm pose out of setupAnim into setupAttackAnimation, and the camera handed that the parent model's render state, so every zombie, drowned, zombie villager and zombified piglin stood with its arms down. The state now comes from the model's own type parameter. Every 26.2 mesh comes out exactly as before.

Everything in this release, in full:
CHANGELOG.md