TODO.txt

- Make program more robust when fed with malformed input (handle exceptions in CLI)
- Show default values when used, for k_exp, k_rdel and fP
- Translate examples
- Translate more parts of the manual

  - The energy calculation routines try to calculate de exported to the grid and redelivered electric energy from the delivered energy, including electric energy delivery, and produced energy (on site or from cogeneration). For energy carriers that don't export energy this is trivial, but electric energy sources add complexity to all this.