- Make `rdrobust` optional for conda. Create `pyproject.toml` and remove `setup.py` for packaging [285](https://github.com/DoubleML/doubleml-for-py/pull/285) [#286](https://github.com/DoubleML/doubleml-for-py/pull/286)
- Maintenance package [284](https://github.com/DoubleML/doubleml-for-py/pull/284)
- Maintenance documentation [205](https://github.com/DoubleML/doubleml-docs/pull/205) [#206](https://github.com/DoubleML/doubleml-docs/pull/206) [#207](https://github.com/DoubleML/doubleml-docs/pull/207)