CI & Tests by `documentation.ipynb`

[Serge3leo]

For conda-forge environments on macOS, Ubuntu and Windows:

• Checking the possibility of executing all cells of documentation.ipynb by nbformat and nbconvert;
• Checking the match of the cells results that do not have the random tag;
• Correction of documentation regarding compilers flags, including for Windows;
• Checks YAML and Python files by yamllint and flake8;
• So far flake8... --exit-zero... (python linter) due to open warnings.

29

[mgaitan]

Huge work Serge3leo! thank you very much.