Jason K. Moore

This seems good to me other than the question about the api doc images.

Actually, there are two pages still in the api section that should be moved: 

If you click "The Physics Vector" in the API docs:  You get a 404.

@eh111eh When you build the docs locally, do a `make clean` and then `make html` then make sure to manually go through and check every page and every section link...

I think the headings need adjustment in the API sections:  We basically only need: * API * Physics * Vector * Mechanics * Biomechanics

> I would advise against making a special topics directory in physics. It is highly subjective and it is better to follow the module structure. I agree with this. We...

I just scanned, will have to read more carefully later. But I'm quite surprised with the results. We wrote the cse based Jacobian because taking the Jacobian of the bicycle...

> I am doing this benchmark in Jupyter. I just made this one on Google Colab to share it with you I recommend that you move away from Jupyter for...

@ricdigi if you will investigate protosym, also do symengine: ```python In [7]: import symengine In [8]: symeng_expr = symengine.sympify(expr) In [9]: symeng_wrt = symengine.sympify(wrt) In [10]: def jac(expr, wrt): ...:...

Hi Oscar, Riccardo is doing GSoC to speed up symbolic calcs in sympy mechanics. Timo and I have advised him to investigate speeding up differentiation (which is a main bottle...