v2.9.0: Updated dependencies (pandas is now optional, gymnasium 1.3.0 support, torch>=2.8)

Breaking Changes:

• Relaxed Gymnasium version range (from "gymnasium>=0.29.1,<1.3.0" to "gymnasium>=0.29.1,<2.0")
• pandas and matplotlib are no longer core dependencies; they are now optional and only required for loading results and plotting (moved to stable-baselines3[extra]).
• Moved read_json and read_csv helper functions to test files
• Raised torch minimum version from 2.3 to 2.8 to mitigate GHSA-887c-mr87-cxwp

Bug Fixes:

• Fixed deprecated error Taxi-v3 from gymnasium v1.3.0 in tests

SB3-Contrib

• Optimized tests (faster to run)
• Fixed dead link for RecurrentPPO.

RL Zoo

SBX (SB3 + Jax)

• Added support for rollout_buffer_class and rollout_buffer_kwargs arguments in PPO and OnPolicyAlgorithmJax constructors, as in Stable Baselines3. (@Trenza1ore)
• Updated Jax dependency

Others:

• Optimized tests (faster to run)
• Add workflow to automatically publish to PyPi when a new tag is created

Documentation:

• Added example for using torch.compile
• Fixed many broken links and updated links to https whenever possible

Full Changelog: v2.8.0...v2.9.0