Tsd-api-client

Version 3 brings new features and many quality of life improvements:
* resumable directory upload
* resumable directory download
* login sessions
* shell completion
* better error messages
* better config management
* pure python implementation for improved portability
* split out tsd-s3cmd to own repo, for maintainability: https://github.com/unioslo/tsd-s3cmd

The new and enhanced cli, `tacl2` (still in beta) gained support for resumable directory upload.

* Update s3cmd to v2.1.0

Also makes installation easier.

* Users can now initiate resumable upload by referring to files with absolute or relative local paths
* Resumable download works as documented, when providing a `--download-id`