FEATURE REQUEST: Independent Pitch & Yaw Bones

Pretty straight-forward, the ability to specify two head bones, where one is responsible for Yaw, and the other would be responsible for Pitch. Here's a video of a model where this could be applied. Blockbench_T6xM1pXVbS

The current workaround is to have 3 MEG entities, one base, one yaw, and one pitch, and mounting them all together. This results in some unwanted interpolation when they're all mounted together.