Exponent calculation for quaternions appears to be missing from LQuaternionf

[ghost]

The common concept of exponent calculation for quaternions appears to be missing from panda3d.core.LQuaternionf/panda3d.core.LRotationf.

When interpreting a quaternion as a relative rotation (and not an orientation), you could e.g. want to apply only half or only 30% of a rotation. The computation of this appears to be commonly notated with q as base and e.g. 0.5 or 0.3 as exponent: q ** 0.3 (as described here: https://math.stackexchange.com/questions/162863/how-to-get-a-part-of-a-quaternion-e-g-get-half-of-the-rotation-of-a-quaternion/162892#162892 )

However, on the panda3d API reference page http://www.panda3d.org/reference/devel/python/panda3d.core.LQuaternionf the only function even mentioning exponent returns LVecBase4f and not a Quaternion and seems to be inherited from LVecBase4f instead of doing something quaternion-specific.

Is such a functionality implemented somewhere and I'm just missing it? Otherwise, it would be very useful if this could be added.

[ghost]

For what it's worth, smooth mover (which I am currently using as a replacement for this calculation) looks like it has gimbal lock limitations. Therefore, having this would be a great addition to do this calculation properly without such limitations.