TODO

- [x] Fix “ContinousParametric” and “ContinousParametricProcess” classes API documentation
- [x] Move "Usage Example" from "User guide" section (user/index.rst) to "Usage" (usage.md) section
- [ ] Add docstrings to constants. Simply add "///" instead of "//" ? Find how to transfert comments from doxygen xml to breathe
- [x] Welcome page: better integrate code lines (`pip install...`). Also move section "Note for developpers" into a more appropriated section ?
- [ ] Move objects description from "tutorials.rst" into "Usage" section
- [ ] Ensure that warnings are raise is non-existing keyword arguments are used in functions (e.g. Nbiteration in place of NbIteration)
- [ ] Have wrapper documentation be transferred to python module.