chore(main): release 0.20.7

[rickstaa]

:robot: I have created a release beep boop

0.20.7 (2024-03-24)

Bug Fixes

• cartPole: ensure reward range scales with max cost (#353) (28236fc)
• cartPole: fix cartpole init range and improce docs (#351) (b3f650a)
• oscillator: fix minor oscillator environments bugs (#360) (1f928d7)

Documentation

• add unit test documentation (df9d1b1)
• ex3EKF: ddd reference to Original Ex3EKF env description (a42922f)
• fix minor docs typos (#355) (f33a6b1)
• fix README formatting (499ab98)
• halfCheetahCost: add Han et al. 2020 codebase difference comment (#367) (bfd1ed0)
• improve docs and docstrings (#354) (74bb1e2)
• Minitaur: improve docstring (c2bd874)

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This PR was generated with Release Please. See documentation.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (1f928d7) to head (67e67b8). Report is 10 commits behind head on main.

:exclamation: Current head 67e67b8 differs from pull request most recent head 4deeed1. Consider uploading reports for the commit 4deeed1 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #352 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 16 16 Lines 712 712 ========================================= Hits 712 712 ```

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[rickstaa]

:robot: Release is at https://github.com/rickstaa/stable-gym/releases/tag/v0.20.7 :sunflower: