The Separate Quaternion node is now vectorized.
The Combine Quaternion node is now vectorized.
The Mix Quaternion now uses a spherical interpolation which is more suitable for rotations than standard linear interpolation. Additionally, the node is now vectorized.
The Random Quaternion node now has a Create List option which allows the creation for a list of quaternions.
The Convert Rotations node was vectorized.
The Mix Eulers node is now vectorized.