Micael Oliveira requested to merge system_of_systems into develop May 13, 2020

Description

Add new multisystem class. This is an extension of system_abst_t that contains a list of systems. It allows to have nested systems of systems.
Refactoring of run.F90 so that the code is split into a proper multi-system mode and the legacy mode for electrons.
Add a system factory.
Fix a couple of bugs.

News snippet

Add new multisystem 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.

Edited Jul 13, 2020 by Martin Lueders