modified:   aperiodic_sine.py
	new file:   cardiod.py
	modified:   chasing_heart.py
	modified:   circle.py
	modified:   closing_opening_circle.py
	modified:   closing_opening_ellipse.py
	modified:   curvy_ortho_heart.py
	modified:   double_lemniscus.py
	modified:   ellipse.py
	modified:   expanding_circle.py
	new file:   flower.py
	modified:   lemniscus.py
	modified:   lopsided_lemniscus.py
	modified:   morphing_sine.py
	modified:   moving_circle.py
	modified:   moving_colour_sine.py
	modified:   moving_flower.py
	modified:   moving_sine.py
	modified:   moving_twinning_colour.py
	modified:   orthonormal_heart.py
	modified:   overlapping_circle.py
	modified:   overlapping_circle1.py
	modified:   overlapping_circle2.py
	modified:   penta_lemnicus.py
	modified:   penta_lemnicus1.py
	modified:   plot.py
	modified:   pygame_line1.py
	modified:   quad_lemnicus.py
	renamed:    heart.py -> running_worm.py
	modified:   simple_graphic_demo.py
	new file:   tricusp.py
	modified:   triple_lemnicus.py
	modified:   wavy_ortho_heart.py