Operator + between two CartesianPose is not commutative #27
Description
Because of the nature of the quaternion operation behind the operator+, the operation is not commutative which is slightly weird for an addition. It can lead to weird errors such as:
current_pose = dt * twist + current_pose;
will not lead to desired behavior when
current_pose = current_pose + dt * twist;
does (see #26). This can be a behavior we have to accept but then make super clear that there are differences between them.