mbostock/d3 — pull request #759 by snoble (2012-08-10 19:03:11+00:00)
Title: Add cubic polynomial splines

Currently hermite splines are being used in a lot of places when you want to generate graphs of functions. Unfortunately these create bezier curves which may reverse eg
http://bl.ocks.org/3315490 and http://bl.ocks.org/3316746

This can be solved by choosing control points that create regular polynomial splines
see http://bl.ocks.org/3316815 and http://bl.ocks.org/3316859

Tests are broken here because the generated paths have changed