v0.9.0: Community API and new `push_to_hub` mixins

Community API

Huge work to programmatically interact with the community tab, thanks to @SBrandeis !
It is now possible to:

• Manage discussions (create_discussion, create_pull_request, merge_pull_request, change_discussion_status, rename_discussion)
• Comment on them (comment_discussion, edit_discussion_comment)
• List them (get_repo_discussions, get_discussion_details)

See full documentation for more details.

• ✨ Programmatic API for the community tab by @SBrandeis in #930

HTTP-based push_to_hub mixins

push_to_hub mixin and push_to_hub_keras have been refactored to leverage the http-endpoint. This means pushing to the hub will no longer require to first download the repo locally. Previous git-based version is planned to be supported until v0.12.

• Push to hub mixins that do not leverage git by @LysandreJik in #847

Miscellaneous API improvements

• ✨ parent_commit argument for create_commit and related functions by @SBrandeis in #916
• Add a helpful error message when commit_message is empty in create_commit by @sgugger in #962
• ✨ create_commit: more user-friendly errors on HTTP 400 by @SBrandeis in #963
• ✨ Add files_metadata option to repo_info by @SBrandeis in #951
• Add list_spaces to HfApi by @cakiki in #889

Miscellaneous helpers (advanced)

Filter which files to upload in upload_folder

• Allowlist and denylist when uploading a folder by @Wauplin in #994

Non-existence of files in a repo is now cached

• Cache non-existence of files or completeness of repo by @sgugger in #986

Progress bars can be globally disabled via the HF_HUB_DISABLE_PROGRESS_BARS env variable or using disable_progress_bars/enable_progress_bars helpers.

• Add helpers to disable progress bars globally + tests by @Wauplin in #987

Use try_to_load_from_cache to check if a file is locally cached

• Add utility to load files from cache by @sgugger in #980

Documentation updates

• [Doc] Update "Download files from the Hub" doc by @julien-c in #948
• Docs: Fix some missing images and broken links by @NimaBoscarino in #936
• Replace upload_file with upload_folder in upload_folder docstring by @mariosasko in #927
• Clarify upload docs by @stevhliu in #944

Bugfixes & small improvements

• Handle redirections in hf_hub_download for a renamed repo by @Wauplin in #983
• PR Make path_in_repo optional in upload folder by @Wauplin in #988
• Use a finer exception when local_files_only=True and a file is missing in cache by @Wauplin in #985
• use fixes JSONDecodeError by @Wauplin in #974
• 🐛 Fix PR creation for a repo the user does not own by @SBrandeis in #922
• login: tiny messaging tweak by @julien-c in #964
• Display endpoint URL in whoami command by @juliensimon in #895
• Small orphaned tweaks from #947 by @julien-c in #958
• FIX LFS track fix for Hub Mixin by @merveenoyan in #919
• 🐛 fix multilinguality test and example by @nateraw in #941
• Fix custom handling of refined HTTPError by @osanseviero in #924
• Followup to #901: Tweak repocard_types.py by @julien-c in #931
• [Keras Mixin] - Flattening out nested configurations for better table parsing. by @ariG23498 in #914
• [Keras Mixin] Rendering the Hyperparameter table vertically by @ariG23498 in #917

Internal

• Disable codecov + configure pytest FutureWarnings by @Wauplin in #976
• Enable coverage in CI by @Wauplin in #992
• Enable flake8 on W605 by @Wauplin in #975
• Enable flake8-bugbear + adapt existing codebase by @Wauplin in #967
• Test that TensorFlow is not imported on startup by @lhoestq in #904
• Pin black to 22.3.0 to benefit from a stable --preview flag by @LysandreJik in #934
• Update dev version by @gante in #921