Simplified Some Logic
Simplified Some Logic

Since my scaling code used to be sort of brittle, I had been scaling the
y coordinates as if they were in a positive coordinate system like the x
coordinates, and then flipping them after the fact. Now, I can have them
scaled backwards from the get go, simplifying make-graph-svg a bit.

jackfirth/herbie,jackfirth/herbie,jackfirth/herbie,jackfirth/herbie,jackfirth/herbie,jackfirth/herbie