chore: bump gym from 0.21.0 to 0.26.0

[dependabot]

Bumps gym from 0.21.0 to 0.26.0.

Release notes

Sourced from gym's releases.

0.26.0

Release notes for v0.26.0

This release is aimed to be the last of the major API changes to the core API. All of the previously "turned off" changes of the base API (step termination / truncation, reset info, no seed function, render mode determined by initialization) are now expected by default. We still plan to make breaking changes to Gym itself, but to things that are very easy to upgrade (environments and wrappers), and things that aren't super commonly used (the vector API). Once those aspects are stabilized, we'll do a proper 1.0 release and follow semantic versioning. Additionally, unless something goes terribly wrong with this release and we have to release a patched version, this will be the last release of Gym for a while.

If you've been waiting for a "stable" release of Gym to upgrade your project given all the changes that have been going on, this is the one.

We also just wanted to say that we tremendously appreciate the communities patience with us as we've gone on this journey taking over the maintenance of Gym and making all of these huge changes to the core API. We appreciate your patience and support, but hopefully, all the changes from here on out will be much more minor.

Breaking backward compatibility

These changes are true of all gym's internal wrappers and environments but for environments not updated, we provide the EnvCompatibility wrapper for users to convert old gym v21 / 22 environments to the new core API. This wrapper can be easily applied in gym.make and gym.register through the apply_api_compatibility parameters.

• Step Termination / truncation - The Env.step function returns 5 values instead of 4 previously (observations, reward, termination, truncation, info). A blog with more details will be released soon to explain this decision. @​arjun-kg
• Reset info - The Env.reset function returns two values (obs and info) with no return_info parameter for gym wrappers and environments. This is important for some environments that provided action masking information for each actions which was not possible for resets. @​balisujohn
• No Seed function - While Env.seed was a helpful function, this was almost solely used for the beginning of the episode and is added to gym.reset(seed=...). In addition, for several environments like Atari that utilise external random number generators, it was not possible to set the seed at any time other than reset. Therefore, seed is no longer expected to function within gym environments and is removed from all gym environments @​balisujohn
• Rendering - It is normal to only use a single render mode and to help open and close the rendering window, we have changed Env.render to not take any arguments and so all render arguments can be part of the environment's constructor i.e., gym.make("CartPole-v1", render_mode="human"). For more detail on the new API, see blog post @​younik

Major changes

• Render modes - In v25, there was a change in the meaning of render modes, i.e. "rgb_array" returned a list of rendered frames with "single_rgb_array" returned a single frame. This has been reverted in this release with "rgb_array" having the same meaning as previously to return a single frame with a new mode "rgb_array_list" returning a list of RGB arrays. The capability to return a list of rendering observations achieved through a wrapper applied during gym.make. #3040 @​pseudo-rnd-thoughts @​younik
• Added save_video that uses moviepy to render a list of RGB frames and updated RecordVideo to use this function. This removes support for recording ansi outputs. #3016 @​younik
• RandomNumberGenerator functions: rand, randn, randint, get_state, set_state, hash_seed, create_seed, _bigint_from_bytes and _int_list_from_bigint have been removed. @​balisujohn
• Bump ale-py to 0.8.0 which is compatibility with the new core API
• Added EnvAPICompatibility wrapper @​RedTachyon

Minor changes

• Added improved Sequence, Graph and Text sample masking @​pseudo-rnd-thoughts
• Improved the gym make and register type hinting with entry_point being a necessary parameter of register. #3041 @​pseudo-rnd-thoughts
• Changed all URL to the new gym website https://www.gymlibrary.dev/ @​FieteO
• Fixed mujoco offscreen rendering with weight and height value > 500 #3044 @​YouJiacheng
• Allowed toy_text environment to render on headless machines #3037 @​RedTachyon
• Renamed the motors in the mujoco swimmer envs #3036 @​lin826

0.25.2

Release notes for v0.25.2

This is a fairly minor bug fix release.

Bug Fixes

• Removes requirements for _TimeLimit.truncated in info for step compatibility functions. This makes the step compatible with Envpool @​arjun-kg
• As the ordering of Dict spaces matters when flattening spaces, updated the __eq__ to account for the .keys() ordering. @​XuehaiPan
• Allows CarRacing environment to be pickled. Updated all gym environments to be correctly pickled. @​RedTachyon
• seeding Dict and Tuple spaces with integers can cause lower-specification computers to hang due to requiring 8Gb memory. Updated the seeding with integers to not require unique subseeds (subseed collisions are rare). For users that require unique subseeds for all subspaces, we recommend using a dictionary or tuple with the subseeds. @​olipinski
• Fixed the metaclass implementation for the new render api to allow custom environments to use metaclasses as well. @​YouJiacheng

Updates

• Simplifies the step compatibility functions to make them easier to debug. Time limit wrapper with the old step API favours terminated over truncated if both are true. This is as the old done step API can only encode 3 states (cannot encode terminated=True and truncated=True) therefore we must encode to only terminated=True or truncated=True. @​pseudo-rnd-thoughts
• Add Swig as a dependency @​kir0ul
• Add type annotation for render_mode and metadata @​bkrl

0.25.1

Release notes

... (truncated)

Commits

• 824507b update the version number to v26 (#3056)
• d1d0c96 Bump ale to 0.8.0 (#3071)
• d818750 Add a complete compatibility wrapper (#3066)
• 2f33096 fix: restore auto human rendering (#3063)
• a18e0a3 Fix lunar lander reward doc (#3064)
• 525b983 Correct the module scope of DeprecationWarning warning filter (#3059)
• 0608263 environment agnostic {mode}_list render mode (#3060)
• f39747d Update Composite spaces with full coverage (#3047)
• 8e74fe3 Add testing for Fundamental spaces with full coverage (#3048)
• 43b42d5 cliffwalking: remove annoying warnings (#3058)
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[dependabot]

Superseded by #219.