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To do
[ ] (if applicable, when creating new source files): don't forget to update the Doxygen file, the collective gqcp.hpp include header and the CMake files
[ ] Add other smaller task to be completed as a Markdown task list
Short description
Provide a clear and concise description of what is (to be) done in this pull request.
Related issues
Link to the open (and possibly closed) issues that are related to this pull request. If this pull request fully closes an issue, please use GitHub's closing keywords.
To do
gqcp.hppinclude header and the CMake files