Latex wasn't working because the README contains a link to an image that
cannot be converted. So I asked that the image only appears in html.
There were also some strange problems with the markdown math syntax, so
I switched to full LaTeX which seems to be working.

cmake config can no toggle the use of "NDEBUG" or "USE_TIMINGOUTPUT"
compiler flags, hence source files and/or .bashrc no longer need to be changed
themselves.
I'm not sure the mechanism survives very nicely for executable
compilation, but it's better to have it and figure that out later.

this approach implicitly solves the anisotropic grid problem

We should use conventions used previously in the literature, so that's
what we're doing.