updated exercise 3.4 (orig) to catkin
updated exercise 3.5 (orig) to catkin
updated exercise 3.6 (orig) to catkin
updated exercise 4.2 (orig) to catkin
updated demo_manipulation (orig) to catkin
updated exercise 3.6 (orig) to catkin
updated exercise 3.5 (ref) to catkin
updated exercise 3.4 (ref) to catkin
updated exercise 3.5 (orig) to catkin
updated exercise 3.6 (ref) to catkin
updated exercise 4.2 (ref) to catkin
updated demo_manipulation (ref) to catkin
updated exercise 3.4 (work) to catkin
updated exercise 3.5 (work) to catkin
updated exercise 3.6 (work) to catkin
updated exercise 4.2 (work) to catkin
updated demo_manipulation (work) to catkin