Upgrade from Gym to Gymnasium #91
Description
Is your feature request related to a problem? Please describe.
Yes. The project currently uses the gym library, which is no longer actively maintained (since 2021 https://github.com/openai/gym). This creates compatibility and long-term support issues. Many tools and environments are shifting to gymnasium, which is a drop-in replacement maintained by the Farama Foundation. I'm concerned that continuing to use gym may lead to future breakages or prevent integration with newer tools.
Describe the solution you'd like
I would like to upgrade the project from gym to gymnasium. This change should be mostly straightforward, as gymnasium is designed to be a backward-compatible replacement. This upgrade will ensure ongoing compatibility and access to future updates and features.
Describe alternatives you've considered
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Staying with gym: This option leaves us vulnerable to future issues as the library becomes increasingly outdated.
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Switching to another RL library entirely: This would involve significantly more work and is unnecessary given that gymnasium is an actively maintained continuation of gym.
Additional context
I’ve already created a proof of concept that performs this upgrade, including migrating from Poetry to UV for faster dependency management. I’d be happy to submit a PR if the maintainers are open to it.