pandapower 1.4
Major change in fileIO:
- all networks are converted to a uniform dataframe only version before they are saved as excel, json or sql
- to_pickle does not save DataFrame objects but only built-in python types
Old files can still be loaded, but all files saved with v1.4 can only be loaded with v1.4!
Additional changes:
- All tests now pass if numba is not installed (although pandapower might be slow without numba)
- State estimation bug with phase shift transformers
- OPF now raises specific warning if parameters are missing instead of generic exception
- Geographical data for cigre and IEEE case networks
- Added Dickert LV Networks