Pypowsybl

- Add network reduction (60)
- Add Sphinx documentation template (64)
- Add tap position to 2 and 3 windings transformer data frame (66)
- HVDC line contingency support in DC sensitivity analysis (67, 69)
- Improve sensitivity analysis memory consumption (59)

GridPy v0.5.0 Release Notes
- Fix error "basic_string::_M_construct null not valid" when creating a network element data frame (53)
- Upgrade OLF to 0.10.0-dev2 (54):
- DC sensitivity analysis: fix contingency involving phase tap changer

GridPy v0.4.0 Release Notes
- Propagate exceptions to Python (30, 47).
- Add main synchronous component filtering to Network.get_elements_ids (48).
- Add IIDM element properties to dataframe (49).
- DC sensitivity analysis (OLF v0.10.0-dev1):
- Fix N-K reference flow for contingency involving phase tap changer
- Fix NullPointerException in case of disconnected phase tap changer

GridPy v0.3.0 Release Notes
- Get network elements as a [Pandas](https://pandas.pydata.org/) dataframe (#38).
- In get_elements_ids, add a parameter to skip branches connected to same bus at both sides (42).
- Fix string encoding issue on Windows (43).
- Update to Open Load Flow 0.9.0
- DC sensitivity
- HVDC converter station sensitivity
- N-K contingency breaking connectivity support
- N-K reference flows

GridPy v0.2.0 Release Notes
- Get sensitivity matrix in [Pandas](https://pandas.pydata.org/) dataframe instead of [Numpy](https://numpy.org/) array (#33).
- Get generators (id, target_p, min_p, max_p, nominal_voltage, country and bus) and loads (id, p0, nominal_voltage, country and bus) from a network (34).
- Get sensitivity reference flows (35).
- Improve get elements IDs with by country filtering (36).

GridPy v0.1.0 Release Notes

This is the first GridPy release. Some of the PowSyBl library features available in this release:
- Create an empty network
- Create an IEEE14 or Eurostag tutorial example network
- Load a network from a file, supporting CGMES, UCTE, XIIDM, Matpower, IEEE CDF and PSS/E data format
- Dump to network to a file, supporting XIIDM and UCTE data format
- List network buses (bus view or bus/breaker view)
- List network elements IDs with element type, nominal voltage and connected component filtering
- Open or close a switch
- Connect or disconnect a switch
- Generate a single line diagram (SVG) from a voltage level
- Run a load flow (AC or DC mode, all parameters and results implemented)
- Run a security analysis (AC mode, N-K contingencies configurable, all pre and post contingency results)
- Run a sensitivity analysis (DC mode, N-K contingencies, sensitivity factor matrix, integration with numpy)