HuggingFaceHub v0.1.2

Merged pull requests:

• Fix bug of file_upload (#2) (@yezhengkai)
• CompatHelper: bump compat for HTTP to 1, (keep existing compat) (#4) (@github-actions[bot])
• CompatHelper: add new compat entry for Downloads at version 1, (keep existing compat) (#5) (@github-actions[bot])

Closed issues:

• _api_json is not implemented (#1)