The first milestone is to grow the numerical algorithm provided by Andrea, to a full fledged modular stub that enhances and welcomes collaborators.

In order to do so:

i) the numerical solution must remain efficient and reliable;

ii) the tests to verify expansions and solutions must be in place, in a separate module, and eventually in continuous integration;

iii) the modularity of the program must be ensured with a proper class architecture;

iv) input/output structure must be in place;

v) the document regarding present status and envisaged future must be accessible;