v0.13.0

This release enables support for Python 3.9 and sklearn 1.0 and improves the documentation of the OrthoIV and DRIV classes.

Note that for the moment, the Python 3.9 version of econml does not support the deepiv module because of conflicts with our required versions of tensorflow and keras; we hope to address this in a subsequent release.

What's Changed

• Add notebook for DRIV by @heimengqi in #518

Full Changelog: v0.12.0...v0.13.0