Scvi-tools

- updated to torch v1 [jules]
- added stress tests for harmonization [chenling]
- fixed autograd breaking [romain]
- make removal of empty cells more efficient [john-reid]
- switch to os.path.join [casey-greene]

- added baselines and datasets for sMFISH imputation [jules]
- added harmonization content [chenling]
- fixing bugs on DE [romain]

- annotation notebook [eddie]
- Memory footprint management [jeff]
- updated early stopping [max]
- docstring [james-webber]

- MMD and adversarial inference wrapper [eddie]
- Documentation [jeff]
- smFISH data imputation [max]

- Dataset additions [eddie]
- Documentation [yining]
- updated early stopping [max]

- Notebook enhancement [yining]
- Semi-supervision [eddie]