c82311bb8e
Interactive blending of poses can now use negative factors (i.e. drag to the left) to blend in the flipped pose. This reverts rB6eb1c98b15bb7ea6cf184b08617f24c7afb91b6c where the F key was used to flip the pose. That was already described as stop-gap measure, and the new behaviour is more intuitive & direct. Functionality over-the-shoulder reviewed by @hjalti.