All significant changes to this project will be documented here.

• Add support for Python 3.10.

Release date: 2021-07-12

• Add an AutoResetEnvironment that calls reset for you if the previous step was the last step.

Release date: 2021-02-12

• Dropped support for Python versions < 3.6.

Release date: 2020-10-30

• Added a StringArray spec subclass for representing arrays of variable- length strings.
• Added a check to enforce that minimum <= maximum for BoundedArray.

Release date: 2019-11-12

• test_utils.EnvironmentTestMixin can now be used to validate implementations of dm_env.Environment where actions, observations, rewards and/or discounts are arbitrary nested structures containing numpy arrays or scalars.

Release date: 2019-08-12

• Specs now have a replace method that can be used to create a new instance with some of the attributes replaced (similar to namedtuple._replace).

• The BoundedArray constructor now casts minimum and maximum so that their dtypes match that of the spec instance.

Release date: 2019-07-18

• Initial release.