Had to get the canvas object to draw_idle() in order for it
to be refreshed. Now it works great! I might tweak the step size
for the sliders, as 0.1 can end up with weird, not quite complete
plots.
Still trying to work out the kinks, as only one plot is showing,
and it's not updating with the sliders. I'll get there sooner
or later. Also updated the gitignore, and added images showing
the parametric equations used to calculate the graphs. Neat!
