v3.3.4

v3.3.3...v3.3.4
Milestone

---

🐛 Bugfixes

• #1575: Fix combineSkeletons where the same skin index accessor is shared between different skeleton groups

📄 Docs

• #1571: Update the "How to Release" secion of CONTRIBUTING.md

🧹 Chores

• #1570: Update copyright year