I just finished Part 1 of a Quadratic Bezier Interpolation Script, it interpolates smooth beetween 3 points, just like here: wikipedia

It is probably not a genius work but I'm pretty proud because I started programming just a few days ago. I think it is very fast to compute and, once finished, could be used wherever path_spline is too heavy for example particle movement.
My next goal is to combine it with linear interpolation and add a function that jumps to the next 3 points.