hector_pose_estimation_core: renamed symmetric matrix assertion
precompiler switch
hector_pose_estimation_core: fixed yaw update quaternion matrix in
PoseUpdate::updateState() (x,y,z,w order)
hector_pose_estimation_core: disabled ROS_BUILD_TYPE Debug
hector_pose_estimation_core: added parameter base_height to
GroundVehicleModel to set initial z position