Nicolas Tancogne-Dejean requested to merge charged_particle into develop Mar 11, 2020

Description

Renaming the celestial_body_t to classical_particle_t. Adding a derived charge_particle_t class.

News snippet

Renaming the celestial_body_t to classical_particle_t. Adding a derived charge_particle_t class.

Checklist

I have checked that my code follows the Octopus coding standards
I have added tests for all the new features added in this request.