# Description

Due to recent release of Gymnasium 1.0.0, this now becomes the Gymnasium
version that gets installed when running the installation process for
Isaac Lab. Gymnasium 1.0.0 requires all environments to be a subclass of
`gym.Env` when using the `make` interface. This change makes the
`DirectMARLEnv` a subclass of `gym.Env` to satisfy this requirement.

Fixes #1002 

## Type of change

- Bug fix (non-breaking change which fixes an issue)
- Breaking change (fix or feature that would cause existing
functionality to not work as expected)


## Checklist

- [x] I have run the [`pre-commit` checks](https://pre-commit.com/) with
`./isaaclab.sh --format`
- [x] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [x] I have updated the changelog and the corresponding version in the
extension's `config/extension.toml` file
- [ ] I have added my name to the `CONTRIBUTORS.md` or my name already
exists there

<!--
As you go through the checklist above, you can mark something as done by
putting an x character in it

For example,
- [x] I have done this task
- [ ] I have not done this task
-->