Release/1.6.0

[simmonsj330]

Description

Updating files prior to release.

Others

• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• My code passes all the checks pylint, flake8, black, ... To speed up development you should run pre-commit install.
• New and existing unit tests pass locally with my changes. You can test this locally using pytest tests/....

[DidierRLopes]

Can we update the version on feature_flags.py as well?

[Chavithra]

Looks good to me !