v0.8.1: lazy loading, git-aware cache file layout, new create_commit

Git-aware cache file layout

v0.8.1 introduces a new way of caching files from the Hugging Face Hub, to two methods: snapshot_download and hf_hub_download.
The new approach is extensively documented in the Documenting files guide and we recommend checking it out to get a better understanding of how caching works.

• New git-aware cache file layout by @julien-c in #801

New create_commit API

A new create_commit API allows users to upload and delete several files at once using HTTP-based methods. You can read more about it in this guide. The following convenience methods were also introduced:

• upload_folder: Allows uploading a local directory to a repo.
• delete_file allows deleting a single file from a repo.

upload_file now uses create_commit under the hood.

create_commit also allows creating pull requests with a create_pr=True flag.

None of the methods rely on Git locally.

• New create_commit API by @SBrandeis in #888

Lazy loading

All modules will now be lazy-loaded. This should drastically reduce the time it takes to import huggingface_hub as it will no longer load all soft dependencies.

• ENH lazy load modules in the root init by @adrinjalali in #874

Improvements and bugfixes

• Add request ID to all requests by @LysandreJik in #909
• Remove deprecations by @LysandreJik in #910
• FIX Avoid creating repository when it exists on remote by @merveenoyan in #900
• 🏗 Use hub-ci for tests by @SBrandeis in #898
• Refine 404 errors by @LysandreJik in #878
• Fix typo by @lsb in #902
• FIX metadata_update: work on a copy of the upstream file, to not mess up the cache by @julien-c in #891
• ENH Removed history writing in Keras model card by @merveenoyan in #876
• CI enable codecov by @adrinjalali in #893
• MNT deprecate imports from snapshot_download by @adrinjalali in #880
• Pushback deprecation for v0.7 release by @LysandreJik in #882
• FIX make import machinary private by @adrinjalali in #879
• ENH Keras Use table instead of dictionary for hyperparameters in model card by @merveenoyan in #877
• Invert deprecation for create_repo in #912
• Constant was accidentally removed during deprecation transition in #913