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**Features and Improvements**
- Loosened up ``jsonpatch`` requirements, as the metadata API now supports more recent versions of the JSON Patch standard.
- Added support for building "snap" packages (https://snapcraft.io/).
**Bugfixes**
- Fixed bug in upload where users were unable to add their own timeout via ``request_kwargs``.
- Fixed bug where files with non-ascii filenames failed to upload on some platforms.
- Fixed bug in upload where metadata keys with an index (e.g. ``subject[0]``) would make the request fail if the key was the only indexed key provided.
- Added a default timeout to ``ArchiveSession.s3_is_overloaded()``.
If it times out now, it returns ``True`` (as in, yes, S3 is overloaded).