Release Notes

Bugs fixed

• Replace np.bool8 with np.bool_ for numpy 1.24 deprecation warning by @pseudo-rnd-thoughts in #221
• Remove shimmy as a core dependency by @pseudo-rnd-thoughts in #272
• Fix silent bug in ResizeObservation for 2-dimensional observations. by @ianyfan in #230 and by @RedTachyon in #254
• Change env checker assertation to warning by @jjshoots in #215
• Revert make error when render mode is used without metadata render modes by @pseudo-rnd-thoughts in #216
• Update prompt messages for extra dependencies by @XuehaiPan in #250
• Fix return type of AsyncVectorEnv.reset by @younik in #252
• Update the jumpy error to specify the pip install is jax-jumpy by @pseudo-rnd-thoughts in #255
• Fix type annotations of callable to Callable by @ianyfan in #259
• Fix experimental normalize reward wrapper by @rafaelcp in #277

New features/improvements

• Improve LunarLander-v2 step performance by >1.5x by @PaulMest in #235
• Added vector env support to StepAPICompatibility wrapper by @nidhishs in #238
• Allow sequence to accept stacked np arrays if the feature space is Box by @jjshoots in #241
• Improve the warning when an error is raised from a plugin by @pseudo-rnd-thoughts in #225
• Add changelog (release notes) to the website by @mgoulao in #257
• Implement RecordVideoV0 by @younik in #246
• Add explicit error messages when unflatten discrete and multidiscrete fail by @PierreMardon in #267

Documentation updates

• Added doctest to CI and fixed all existing errors in docstrings by @valentin-cnt in #274
• Add a tutorial for vectorized envs using A2C. by @till2 in #234
• Fix MuJoCo.Humanoid action description by @Kallinteris-Andreas in #206
• Ant use_contact_forces obs and reward DOC by @Kallinteris-Andreas in #218
• MuJoCo.Reacher-v4 doc fixes by @Kallinteris-Andreas in #219
• Mention truncation in the migration guide by @RedTachyon in #105
• docs(tutorials): fixed environment creation link by @lpizzinidev in #244
• Mujoco/Hooper doc minor typo fix by @Kallinteris-Andreas in #247
• Add comment describing what convolve does in A2C tutorial by @metric-space in #264
• Fix environment versioning in README.md by @younik in #270
• Add Tutorials galleries by @mgoulao in #258

Thanks to the new contributors to Gymnasium, if you want to get involved, join our discord server. Linked in the readme.

• @PaulMest made their first contribution in #235
• @nidhishs made their first contribution in #238
• @lpizzinidev made their first contribution in #244
• @ianyfan made their first contribution in #230
• @metric-space made their first contribution in #264
• @PierreMardon made their first contribution in #267
• @valentin-cnt made their first contribution in #274
• @rafaelcp made their first contribution in #277

Full Changelog: v0.27.0...v0.27.1