Finish PSSE parser #188
Description
- Add switched shunts (with place-holders for remaining record types)
- Ensure compliance with v34
- Emit warning in conversion function when elements are present that are not supported by
PS - Handle optional inputs
- Add remaining record types
- system-wide data
- area
- two-terminal dc
- vsc dc
- impedence correction
- multi-terminal dc
- multi-section line
- zone
- inter-area transfer
- owner
- facts device
- gne
- induction machine