Synthcity

Changelog:
- Drop `ctgan` and `copulas` dependencies
- Update docs

Changelog
- Rename temporal_horizons -> observation_times
- Move privacy plugins to a separate folder.
- TimeSeriesTabularAutoEncoder -> rename to VAE as appropriate. (AE is different from VAE)
- Remove two sdv plugins in the release (sdv_ctgan, sdv_tvae)
- Use Static and TimeSeries survival
- Docs: data loaders as a section (Tutorial, Data Loader, Generators, Metrics, ...)
- Docs improvements
- Document network architecture -- add reference for each mode supported in ts_model.py (same for tabular data).
- PBC_dataloader fixes

Changelog:
- Bugfixing
- Add tutorials for survival analysis, time series, and DP.

Changelog:
- Time series improvements
- Conditionals improvements

First beta release!