ENH: Add rst_shift.py from https://github.com/westurner/self-directed-learning/blob/cd2d0ee9/techw/rst_shift.py
ENH: Add rst_slideoutline.py from https://github.com/westurner/self-directed-learning/blob/9628636/techw/rst_slideoutline.py (#2)
ENH: rst_slideoutline merge